blocks|key|103720|text|有多种解决方案可以解决这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|103721|解决方案1:耐心等待10到15分钟。喝茶或闲逛;-)|offset|length|style|BOLD|103722|解决方案2:断开设备与系统的连接。重新启动iPhone和Xcode，然后重新构建。|103723|解决方案3:|103724|103725|转到Simulators→设备和模拟器(快捷键:+cmd%2Bshift%2B2)|ordered-list-item|103726|103727|📷|atomic|103728|​|103729|103730|您将看到iPhone设备已连接到系统，并显示消息|103731|103732|iPhone正忙:正在为iPhone准备调试器支持|103733|103734|单击左下角的加号按钮(%2B)。|103735|103736|103737|103738|103739|这将显示连接到系统的设备。点击Next按钮。|103740|103741|103742|103743|103744|之后你会看到‘device+setup+successful’。单击Done按钮。|103745|103746|103747|103748|解决方案3对我很有效！|103749|解决方案4:|103750|取消设备配对，然后重新配对。之后，请执行步骤3。|103751|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/51120f2720453b5c782c507069efaa54.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/ced656ea94df71ef475466c1c0ce1475.png|2|https://ask.qcloudimg.com/http-save/yehe-900000/f463602080954fc113b14b2eecff5abb.png|3|https://ask.qcloudimg.com/http-save/yehe-900000/01cb18ebe9541236070fc0d29e04ec3a.png^0|0|0|6|0|0|6|0|0|6|0|0|0|0|0|1|0|0|0|0|0|0|0|0|0|0|0|1|1|0|0|0|0|0|0|1|2|0|0|0|0|0|0|1|3|0|0|0|0|6|0|0^^$0|@$1|2|3|4|5|6|7|24|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|25|8|@$D|26|E|27|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|28|8|@$D|29|E|2A|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|2B|8|@$D|2C|E|2D|F|G]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|2E|8|@]|9|@]|A|$]]|$1|M|3|N|5|O|7|2F|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|2G|8|@]|9|@]|A|$]]|$1|Q|3|R|5|S|7|2H|8|@]|9|@$D|2I|E|2J|1|2K]]|A|$]]|$1|T|3|U|5|6|7|2L|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|2M|8|@]|9|@]|A|$]]|$1|W|3|X|5|O|7|2N|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|2O|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|2P|8|@]|9|@]|A|$]]|$1|11|3|-4|5|6|7|2Q|8|@]|9|@]|A|$]]|$1|12|3|13|5|O|7|2R|8|@]|9|@]|A|$]]|$1|14|3|-4|5|6|7|2S|8|@]|9|@]|A|$]]|$1|15|3|R|5|S|7|2T|8|@]|9|@$D|2U|E|2V|1|2W]]|A|$]]|$1|16|3|U|5|6|7|2X|8|@]|9|@]|A|$]]|$1|17|3|-4|5|6|7|2Y|8|@]|9|@]|A|$]]|$1|18|3|19|5|O|7|2Z|8|@]|9|@]|A|$]]|$1|1A|3|-4|5|6|7|30|8|@]|9|@]|A|$]]|$1|1B|3|R|5|S|7|31|8|@]|9|@$D|32|E|33|1|34]]|A|$]]|$1|1C|3|U|5|6|7|35|8|@]|9|@]|A|$]]|$1|1D|3|-4|5|6|7|36|8|@]|9|@]|A|$]]|$1|1E|3|1F|5|O|7|37|8|@]|9|@]|A|$]]|$1|1G|3|-4|5|6|7|38|8|@]|9|@]|A|$]]|$1|1H|3|R|5|S|7|39|8|@]|9|@$D|3A|E|3B|1|3C]]|A|$]]|$1|1I|3|U|5|6|7|3D|8|@]|9|@]|A|$]]|$1|1J|3|1K|5|6|7|3E|8|@]|9|@]|A|$]]|$1|1L|3|1M|5|6|7|3F|8|@$D|3G|E|3H|F|G]]|9|@]|A|$]]|$1|1N|3|1O|5|6|7|3I|8|@]|9|@]|A|$]]|$1|1P|3|-4|5|6|7|3J|8|@]|9|@]|A|$]]]|1Q|$1R|$5|1S|1T|1U|A|$1V|1W|1X|-4]]|1Y|$5|1S|1T|1U|A|$1V|1Z|1X|-4]]|20|$5|1S|1T|1U|A|$1V|21|1X|-4]]|22|$5|1S|1T|1U|A|$1V|23|1X|-4]]]]

There are multiple solutions for this:

Solution 1: Patiently wait for 10 to 15 minutes. Have a tea or roam around ;-)

Solution 2: Disconnect device from the system. Restart both iPhone and Xcode and then rebuild again.

Solution 3:

<ol>
<li>Go to Windows → Devices and Simulators (Shortcut key: cmd+shift+2)

<a href="https://i.stack.imgur.com/HPgtz.png" rel="noreferrer"><img src="https://i.stack.imgur.com/HPgtz.png" alt="Step 1"></a></li>
<li>You’ll see iPhone device connected to system with message 

<blockquote>
 iPhone is busy: Preparing debugger support for iPhone
</blockquote></li>
<li>Click on plus button (+) present in bottom-left corner.

<a href="https://i.stack.imgur.com/ZfW9c.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ZfW9c.png" alt="Step2-3"></a></li>
<li>This will show the device connected to system. Click on Next button.

<a href="https://i.stack.imgur.com/L9SrK.png" rel="noreferrer"><img src="https://i.stack.imgur.com/L9SrK.png" alt="Step 4"></a></li>
<li>Thereafter you’ll see ‘device setup was successful’. Click on Done button.

<a href="https://i.stack.imgur.com/oJs6X.png" rel="noreferrer"><img src="https://i.stack.imgur.com/oJs6X.png" alt="Step 5"></a></li>
</ol>

Solution 3 worked for me!

Solution 4:

Unpair your device and then pair it again. Thereafter follow Step 3.

blocks|key|2848773|text|我点击“取消运行”，打开设备列表，取消配对我的iPhone，拔下USB线并重新连接，配对iPhone，然后在我的iPhone上被要求输入我的密码(“PIN码”)。这样做，然后终于能够正确地配对我的手机。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2848774|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I clicked ‘Cancel Running’, opened the Devices list, unpaired my iPhone, removed my USB cable and reconnected it, paired the iPhone, and then was asked on my iPhone to enter my passcode ("pin code"). Did this and then was finally able to pair my phone correctly.

blocks|key|103376|text|请稍等几分钟。应用程序将自动启动|type|unstyled|depth|inlineStyleRanges|entityRanges|data|103377|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Wait a few minutes. The application will start automatically

blocks|key|101307|text|重启Xcode对我很有效(退出后重新启动)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|101308|对我不起作用的是：|101309|101310|在一个设备上等待一个小时|unordered-list-item|101311|在另一个设备|101312|上等待一个小时|101313|entityMap^0|0|M|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|V|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|W|8|@]|D|@]|E|$]]|$1|L|3|M|5|K|7|X|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|Y|8|@]|D|@]|E|$]]|$1|P|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|Q|$]]

Restarting Xcode worked for me (quit and start again).
What didn't work for me:
<ul>
<li>waiting for an hour on one device</li>
<li>waiting for an hour on another device</li>
<li>restarting devices</li>
<li>unpairing/pairing devices</li>
</ul>

blocks|key|2848710|text|原来XCode会打开它下面的设备管理器窗口，等待你点击下一步按钮。切换到该窗口，点击next，您将看到进程显示进度条。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2848711|​|2848712|📷|atomic|offset|length|2848713|2848714|2848715|2848716|2848717|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/040a44baf098e6d790f2f63601fed9c2.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/9bb6c405a69950693d53213d63ee41cb.png^0|0|0|0|1|0|0|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Z|8|@]|9|@$G|10|H|11|1|12]]|A|$]]|$1|I|3|C|5|6|7|13|8|@]|9|@]|A|$]]|$1|J|3|C|5|6|7|14|8|@]|9|@]|A|$]]|$1|K|3|E|5|F|7|15|8|@]|9|@$G|16|H|17|1|18]]|A|$]]|$1|L|3|C|5|6|7|19|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T|U|-4]]|V|$5|P|Q|R|A|$S|W|U|-4]]]]

It turns out XCode opens device manager window beneath it and waits for you to hit the next button. Switch to that window, hit next and you get the progress bar for the process to show up. 

<a href="https://i.stack.imgur.com/fFf0c.png" rel="noreferrer"><img src="https://i.stack.imgur.com/fFf0c.png" alt="enter image description here"></a>

<a href="https://i.stack.imgur.com/JJWPN.png" rel="noreferrer"><img src="https://i.stack.imgur.com/JJWPN.png" alt="enter image description here"></a>

blocks|key|2638894|text|在我的例子中，iTunes是开放的，所以|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2638895|1-打开iTunes|2638896|2-访问您的电话|2638897|​|2638898|📷|atomic|offset|length|2638899|2638900|单击3次即可断开您的电话|2638901|2638902|2638903|现在，该设备已在XCode上就绪|2638904|2638905|2638906|2638907|希望这能帮上忙。|2638908|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/d582cbdb3dc4343af6c8f706798d7993.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/0c9385c94d51030714c6c02ebfe027ed.png|2|https://ask.qcloudimg.com/http-save/yehe-900000/7641f7c4ff80b64477475a9e281c2f13.png^0|0|0|0|0|0|1|0|0|0|0|0|1|1|0|0|0|0|0|1|2|0|0|0^^$0|@$1|2|3|4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1C|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1D|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|1E|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|1F|8|@]|9|@$K|1G|L|1H|1|1I]]|A|$]]|$1|M|3|G|5|6|7|1J|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1K|8|@]|9|@]|A|$]]|$1|P|3|I|5|J|7|1L|8|@]|9|@$K|1M|L|1N|1|1O]]|A|$]]|$1|Q|3|G|5|6|7|1P|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|T|3|G|5|6|7|1R|8|@]|9|@]|A|$]]|$1|U|3|I|5|J|7|1S|8|@]|9|@$K|1T|L|1U|1|1V]]|A|$]]|$1|V|3|G|5|6|7|1W|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1X|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1Y|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15|16|-4]]|17|$5|11|12|13|A|$14|18|16|-4]]|19|$5|11|12|13|A|$14|1A|16|-4]]]]

In my case, iTunes was open, so

1 - open iTunes

2 - access you phone

<a href="https://i.stack.imgur.com/etx99.png" rel="noreferrer"><img src="https://i.stack.imgur.com/etx99.png" alt="enter image description here"></a>

3 - click to disconnect your phone
<a href="https://i.stack.imgur.com/OgCnB.png" rel="noreferrer"><img src="https://i.stack.imgur.com/OgCnB.png" alt="enter image description here"></a>

Now the device is ready on XCode

<a href="https://i.stack.imgur.com/6as5r.png" rel="noreferrer"><img src="https://i.stack.imgur.com/6as5r.png" alt="enter image description here"></a>

Hope it helps....

blocks|key|2850187|text|下面的解决方案对我有效，请按照以下步骤解决您的问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2850188|第1步：取消运行|offset|length|style|BOLD|2850189|2850190|第3步：Unpair++iPhone|2850191|步骤4：已卸下iPhone+USB线和将重新连接到系统|2850192|第5步：连接时配对iPhone，系统将要求您信任或不允许，请单击iPhone上的结构并输入您的密码(PIN码)|2850193|我的设备调试器的问题消失了。|2850194|下面是设备和模拟器菜单的屏幕截图|2850195|​|2850196|📷|atomic|2850197|2850198|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/fc3ea644b78d6d30f7763e4d89d79a86.png|imageAlt^0|0|0|3|4|4|0|0|4|6|0|0|3|E|4|J|1|0|0|3|0|0|3|6|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|17|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|18|8|@$D|19|E|1A|F|G]|$D|1B|E|1C|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|1E|8|@$D|1F|E|1G|F|G]]|9|@]|A|$]]|$1|K|3|L|5|6|7|1H|8|@$D|1I|E|1J|F|G]|$D|1K|E|1L|F|G]|$D|1M|E|1N|F|G]]|9|@]|A|$]]|$1|M|3|N|5|6|7|1O|8|@$D|1P|E|1Q|F|G]]|9|@]|A|$]]|$1|O|3|P|5|6|7|1R|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1S|8|@$D|1T|E|1U|F|G]]|9|@]|A|$]]|$1|S|3|T|5|6|7|1V|8|@]|9|@]|A|$]]|$1|U|3|V|5|W|7|1W|8|@]|9|@$D|1X|E|1Y|1|1Z]]|A|$]]|$1|X|3|T|5|6|7|20|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|21|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15|16|-4]]]]

below solution worked for me, follow steps to resolve your issue:

Step 1: Cancel Running

Step 2 : open Window menu and select Devices and Simulators

Step 3 : Unpair the iPhone

Step 4 : Removed iPhone USB cable and reconnect to the system 

Step 5 : Pair the iPhone when you connect then you will be asked to Trust or Don't Allow, Please click Truct on your iPhone and enter your passcode (Pin Code) 

Note : I performed all the above steps they worked for me. The issue of my device debugger gone.

Below is the Screenshot of Devices and Simulators Menu

<a href="https://i.stack.imgur.com/rUTUh.png" rel="noreferrer"><img src="https://i.stack.imgur.com/rUTUh.png" alt="enter image description here"></a>

blocks|key|2848809|text|我拔下电缆看到了这个。在它到达终点后，我能够运行它，没有任何问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2848810|​|2848811|📷|atomic|offset|length|2848812|2848813|你不必拔出插头就能看到它；只需点击cancel，你就会看到它的进度。|2848814|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/40c523a1b97312f93b8c916fa6876acb.png|imageAlt^0|0|0|0|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@$G|X|H|Y|1|Z]]|A|$]]|$1|I|3|C|5|6|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|11|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S|T|-4]]]]

I unplugged my cable and saw this. After it reached the end I was able to run it no problems. 

<a href="https://i.stack.imgur.com/q8kr1.png" rel="noreferrer"><img src="https://i.stack.imgur.com/q8kr1.png" alt="Xcode screenshot of status bar showing &quot;Preparing debugger support&quot;"></a>

You don't have to unplug to see this; just hit cancel and you will see its progress.

blocks|key|2637469|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2637470|单击窗口菜单并选择Device+|ordered-list-item|2637471|+device+|2637472|单击左下角的%2B按钮|2637473|单击Next|2637474|单击完成|2637475|2637476|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|O|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|P|7|@]|8|@]|9|$]]|$1|D|3|E|4|C|6|Q|7|@]|8|@]|9|$]]|$1|F|3|G|4|C|6|R|7|@]|8|@]|9|$]]|$1|H|3|I|4|C|6|S|7|@]|8|@]|9|$]]|$1|J|3|K|4|C|6|T|7|@]|8|@]|9|$]]|$1|L|3|-4|4|5|6|U|7|@]|8|@]|9|$]]|$1|M|3|-4|4|5|6|V|7|@]|8|@]|9|$]]]|N|$]]

<ol>
<li>Click on Window menu</li>
<li>Select Device and Simulators</li>
<li>Select your device </li>
<li>Click on + button at bottom left corner</li>
<li>Click Next</li>
<li>Click Done</li>
</ol>

blocks|key|2639245|text|在您的iPhone上：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2639246|设置>开发者>清除受信任的计算机|2639247|稍等片刻，就好了。|2639248|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

On your iPhone:
Settings &gt; Developer &gt; Clear Trusted Computers
Wait a few seconds, it's all.

blocks|key|2637431|text|我发现从设备上删除应用程序并使用Xcode重新安装解决了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2637432|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I found deleting the app from the device and re-installing with Xcode solved this issue.

blocks|key|101452|text|我一直在使用我的iPhone+X通过网络调试，突然遇到了这个问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|101453|禁用“通过网络连接”，然后重试。这个把戏对我很管用。|101454|​|101455|📷|atomic|101456|101457|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/0cd278b2a431ec0d8e04ba8e4fb9d145.png|imageAlt^0|M|B|0|0|Q|0|0|1|0|0|1|0|1|0|0|0|1|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|J|3|K|5|L|7|15|8|@$9|16|A|17|B|C]]|D|@$9|18|A|19|1|1A]]|E|$]]|$1|M|3|I|5|6|7|1B|8|@$9|1C|A|1D|B|C]]|D|@]|E|$]]|$1|N|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|O|$P|$5|Q|R|S|E|$T|U|V|-4]]]]

I have been using my iPhone X to debug via Network and suddenly had this problem. 

Disable "Connect via network" and try again with USB. 
This trick worked for me.

<a href="https://i.stack.imgur.com/8tljY.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8tljY.png" alt="enter image description here"></a>

blocks|key|2850211|text|我意识到我的光盘上只有不到100MB的可用空间。释放磁盘空间为我解决了这个问题！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2850212|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I realised I had less than 100 MBs of free space on my disc. Freeing up disk space solved the issue for me!

blocks|key|2850474|text|简单的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2850475|2850476|Open+Window+->+Devices+->+iPhone+on+the+side+list|unordered-list-item|2850477|拔掉并重新插入USB线|2850478|在设备中的提示信息中按下信任！|2850479|，它应该可以工作！这对我很有效，|2850480|2850481|2850482|entityMap^0|0|0|1|1|1|1|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|R|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|S|8|@]|9|@]|A|$]]|$1|H|3|I|5|E|7|T|8|@]|9|@]|A|$]]|$1|J|3|K|5|E|7|U|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|V|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|W|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|O|$]]

Simple solution:

<ul>
<li>Open Window -> Devices and Simulators</li>
<li>Unpair iPhone on the side list</li>
<li>Unplug and plug again the USB cable</li>
<li>Press Trust in the prompt message in the device!</li>
<li>Then it should work! It worked for me</li>
</ul>

blocks|key|101465|text|当你插入一个带有iOS+11的新设备时，Xcode9将为该设备准备调试器支持，此时你应该等待来完成它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|101466|然后在该设备中运行项目，它将顺利运行。|101467|如果你在创建调试器支持时没有保持耐心，那么它将抛出问题中提到的错误。|101468|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

When you plug a New device which is having iOS 11, Xcode 9 will Prepare Debugger Support for that device, At this time you should Wait to complete it. 

Then run the project in that device it will run smoothly.

If you didn't keep patience while creating Debugger Support then it will throw the error mentioned in the question.

blocks|key|101394|text|最好的方式：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|101395|101396|断开iPhone.|ordered-list-item|101397|通过command%2B+shift+%2Bk或转到产品->清理|101398|来清理xcode|101399|再次连接|101400|再次运行|101401|entityMap^0|0|6|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|W|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|X|8|@]|D|@]|E|$]]|$1|J|3|K|5|I|7|Y|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|Z|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|10|8|@]|D|@]|E|$]]|$1|P|3|Q|5|6|7|11|8|@]|D|@]|E|$]]|$1|R|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|S|$]]

The Best way:

<ol>
<li>Disconnect the Iphone.</li>
<li>Clean xcode by command+ shift + k or by going to Product -> Clean</li>
</ol>

Connect again

Run again

blocks|key|100995|text|已重新启动iPhone，关闭所有其他打开的应用程序并解锁手机|type|unstyled|depth|inlineStyleRanges|entityRanges|data|100996|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

rebooted iPhone, closed all other open applications and unlocked phone worked

blocks|key|2849388|text|我有很多次同样的问题，这些东西对我很有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2849389|2849390|正在重新启动我的手机%2B+xCode.|unordered-list-item|2849391|checking确认您的Mac和iPhone都已连接到同一网络。(可能很高)。|2849392|修复我的手机。|2849393|2849394|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|N|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|P|8|@]|9|@]|A|$]]|$1|H|3|I|5|E|7|Q|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|L|$]]

I had the same problem many times, these things worked for me: 

<ul>
<li>restarting my phone + xCode.</li>
<li>checking that both your Mac and your iPhone are connected to the same Network.( has a high potential ).</li>
<li>repairing my phone.</li>
</ul>

blocks|key|104599|text|我的设置|type|unstyled|depth|inlineStyleRanges|entityRanges|data|104600|104601|macOS+10.14.6|unordered-list-item|104602|iOS+13.2.3|104603|Xcode+11.2|104604|104605|在2019-11-24之前，我尝试了所有的“速跑”技巧，但都没有成功。等待似乎是不可避免的，但在我的情况下却是令人难以置信的漫长：|104606|使用最新升级的iOS版本。|104607|然后我在reddit上找到了这条最有意义的评论：|offset|length|104608|104609|当你用iOS版本连接设备时，这是必需的，而相应计算机的Xcode之前没有看到这个版本。它将它们保存在/Users/username/Library/Developer/Xcode/iOS+DeviceSupport中，这确实需要一段时间。不要重启Xcode，因为它不会对您有所帮助，只需等待它完成。|blockquote|104610|104611|这需要相当长的时间，因为这些调试器支持文件占用了很多空间(对于我来说是29+GB+)，尽管你可以安全地从那里删除任何版本，如果你再次连接一个带有该版本的设备，它将从头开始重新保存它。|104612|104613|因此，如果你刚刚升级了你的iOS，那么“从头开始”部分可能会比平时花费更长的时间，这也取决于你的网络状况。在我的例子中，这绝对比其他人声称的“10-15分钟”要长得多。我用小时来衡量它。|104614|许多技巧似乎都奏效了，但它们忽略了一个事实，即当你尝试一些东西时，时间会一直在持续，而Xcode在后台继续运行设置，并且很可能在你重新启动/重新引导周期时恢复它的工作。|104615|这让我注意到我的Xcode版本只比iOS点发布版晚了一步。在升级我的Xcode后，它工作了。|104616|但花了更长的时间，因为我按照提示删除了iOS+DeviceSupport文件夹！|style|BOLD|104617|下面是我的建议：|104618|如果你已经将你的设备连接到了一个足够快的USB端口中，直到Xcode完成“为debugging".|104619|If做好准备”，请继续等待。|104620|不要像|104621|建议的那样删除任何文件夹。如果你已经将你的设备连接到了一个足够快的~/Library/Developer/Xcode/iOS+DeviceSupport端口，请继续等待。如果你已经将你的设备连接到了一个足够快的this+tip端口，请检查你的Xcode版本到次要版本，以确保它确实应该支持你的|CODE|104622|的可用磁盘空间，以便为新生成的设备支持内容腾出空间。删除只会使您等待的时间更长！|104623|104624|104625|entityMap|0|LINK|mutability|MUTABLE|url|https://www.reddit.com/r/iOSProgramming/comments/6gfarv/question_xcode_9_stuck_on_preparing_debugger/|1|https://stackoverflow.com/a/48475629/987846^0|0|0|0|0|0|0|0|0|4|6|0|0|0|0|0|0|0|0|0|0|0|14|0|0|0|0|0|X|17|2X|8|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|20|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|21|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|22|8|@]|9|@]|A|$]]|$1|H|3|I|5|E|7|23|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|24|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|25|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|26|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|27|8|@]|9|@$Q|28|R|29|1|2A]]|A|$]]|$1|S|3|-4|5|6|7|2B|8|@]|9|@]|A|$]]|$1|T|3|U|5|V|7|2C|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|2D|8|@]|9|@]|A|$]]|$1|X|3|Y|5|6|7|2E|8|@]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|2F|8|@]|9|@]|A|$]]|$1|10|3|11|5|6|7|2G|8|@]|9|@]|A|$]]|$1|12|3|13|5|6|7|2H|8|@]|9|@]|A|$]]|$1|14|3|15|5|6|7|2I|8|@]|9|@]|A|$]]|$1|16|3|17|5|6|7|2J|8|@$Q|2K|R|2L|18|19]]|9|@]|A|$]]|$1|1A|3|1B|5|6|7|2M|8|@]|9|@]|A|$]]|$1|1C|3|1D|5|6|7|2N|8|@]|9|@]|A|$]]|$1|1E|3|1F|5|E|7|2O|8|@]|9|@]|A|$]]|$1|1G|3|1H|5|E|7|2P|8|@]|9|@]|A|$]]|$1|1I|3|1J|5|6|7|2Q|8|@$Q|2R|R|2S|18|1K]]|9|@$Q|2T|R|2U|1|2V]]|A|$]]|$1|1L|3|1M|5|E|7|2W|8|@]|9|@]|A|$]]|$1|1N|3|-4|5|6|7|2X|8|@]|9|@]|A|$]]|$1|1O|3|-4|5|6|7|2Y|8|@]|9|@]|A|$]]|$1|1P|3|-4|5|6|7|2Z|8|@]|9|@]|A|$]]]|1Q|$1R|$5|1S|1T|1U|A|$1V|1W]]|1X|$5|1S|1T|1U|A|$1V|1Y]]]]

My setup

<ul>
<li>macOS 10.14.6</li>
<li>iOS 13.2.3</li>
<li>Xcode 11.2</li>
</ul>

Tried all the "speedrun" tips up till 2019-11-24 without luck.
The wait seemed inevitable but incredibly long in my case: 

<h3>with a freshly upgraded iOS version.</h3>

I then found this comment on <a href="https://www.reddit.com/r/iOSProgramming/comments/6gfarv/question_xcode_9_stuck_on_preparing_debugger/" rel="nofollow noreferrer">reddit</a> which makes the most sense:

<blockquote>
 This is required when you connect a device with an iOS version that
 the respective computer's Xcode didn't see before. It saves them in
 /Users/username/Library/Developer/Xcode/iOS DeviceSupport and it does
 take a while. Don't restart Xcode as it will not help you, just wait
 for it to finish. 
 
 It takes quite some time because these debugger
 support files occupy a lot of space (29 GB for me), though you can
 safely delete any version from there, and if you connect a device with
 that version again, it will re-save it from scratch.
</blockquote>

So if you just upgraded your iOS, then the "from scratch" part could take longer than usual, also depending on your network condition. In my case, it is definitely much much longer than the "10-15min" other people claimed. I measure it by hours.

A lot of tricks seem to have worked but they neglect the fact that time goes on as you try things while Xcode keeps working on the setup in the background, and quite possibly resumes its job whenever you do a restart/reboot cycle. 

This led me to noticing that my Xcode version is just one step behind the iOS point release. After upgrading my Xcode, it worked. 

But it took longer because I removed the iOS DeviceSupport folder by following a tip!

<h3>So here are my suggestions:</h3>

<ul>
<li>Check your Xcode version down to the minor version to make sure it should actually support the iOS version.</li>
<li>Check your Mac's free disk space to make room for newly generated device support content under <code>~/Library/Developer/Xcode/iOS DeviceSupport</code> as <a href="https://stackoverflow.com/a/48475629/987846">this tip</a> suggested.</li>
<li>Check if you have connected your device to a fast-enough USB port, as <a href="https://stackoverflow.com/a/47270992/987846">this tip</a> suggests.</li>
<li>Wait till Xcode finishes "preparing for debugging".</li>
<li>If it doesn't finish in a few seconds or minutes, keep waiting.</li>
<li>DO NOT remove any folder as <a href="https://stackoverflow.com/a/56686640/987846">some tips</a> may suggest. Removal would simply make you wait longer!</li>
</ul>

blocks|key|2849024|text|我更新到iOS+11.0.3，然后出现错误。在重启我的iPhone和XCode后，显示“无法启动应用程序”，所以我导航到手机的设备管理信任，然后它解决了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2849025|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I updated to iOS 11.0.3 then the error appeared. After restarting my iPhone and XCode, it showed "Could not launch the app", so I navigated to the phone's device management to trust, then it solved.

blocks|key|2638141|text|我有这个问题是因为我没有给iTunes在计算机上运行的权限。(我不使用iTunes播放音乐，所以每当EULA对话框出现时，我只是愚蠢地恼火地点击了“拒绝”。)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2638142|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I had this problem because I hadn't given iTunes permissions to run on the computer. (I don't use iTunes for music, so I had foolishly just hit "decline" in annoyance whenever the EULA dialog box came up.)

blocks|key|2638820|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2638821|取消配对我的iPhone|unordered-list-item|2638822|拔掉我的USB线并重新连接(请确保拔出U盘并将其插回)|2638823|为iPhone配对。|2638824|2638825|(3个重要步骤)|2638826|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|M|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|N|7|@]|8|@]|9|$]]|$1|D|3|E|4|C|6|O|7|@]|8|@]|9|$]]|$1|F|3|G|4|C|6|P|7|@]|8|@]|9|$]]|$1|H|3|-4|4|5|6|Q|7|@]|8|@]|9|$]]|$1|I|3|J|4|5|6|R|7|@]|8|@]|9|$]]|$1|K|3|-4|4|5|6|S|7|@]|8|@]|9|$]]]|L|$]]

<ul>
<li>Unpaired my iPhone</li>
<li>Removed my USB cable and reconnected it (Do make sure that you unplugged the USB and plugged it back in) </li>
<li>Paired the iPhone.</li>
</ul>

(3 important steps)

blocks|key|2639121|text|Xcode+10.3解决方案|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2639122|以下错误消息适用：|2639123|2639124|+iPhone正忙:准备iPhone+Xcode的调试器支持将在iPhone完成后继续。|blockquote|2639125|2639126|尝试与此设备通信时遇到错误。(该服务无效。)请尝试重新启动并重新连接设备。(0xE8000022)。|2639127|2639128|2639129|按照Jayprakash+Dubey's+post+above中的步骤操作|2639130|和|2639131|2639132|关闭Xcode；|unordered-list-item|2639133|删除DerivedData文件夹的内容~/Library/Developer/Xcode/DerivedData|2639134|Restart+Xcode+&+iPhone+|2639135|对Xcode&iPhone再次运行应用程序并运行应用程序|2639136|2639137|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/47448911/7443472^0|0|E|0|0|0|0|0|0|0|0|2|T|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1D|8|@$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1G|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|1H|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|1I|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1K|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|1L|8|@]|D|@]|E|$]]|$1|P|3|-4|5|6|7|1M|8|@]|D|@]|E|$]]|$1|Q|3|R|5|6|7|1N|8|@]|D|@$9|1O|A|1P|1|1Q]]|E|$]]|$1|S|3|T|5|6|7|1R|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|1S|8|@]|D|@]|E|$]]|$1|V|3|W|5|X|7|1T|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|X|7|1U|8|@]|D|@]|E|$]]|$1|10|3|11|5|X|7|1V|8|@]|D|@]|E|$]]|$1|12|3|13|5|X|7|1W|8|@]|D|@]|E|$]]|$1|14|3|-4|5|6|7|1X|8|@]|D|@]|E|$]]|$1|15|3|-4|5|6|7|1Y|8|@]|D|@]|E|$]]]|16|$17|$5|18|19|1A|E|$1B|1C]]]]

<h2>Xcode 10.3 Solution</h2>

The following error messages apply:

<blockquote>
 iPhone is busy: Preparing debugger support for iPhone 
 Xcode will continue when iPhone is finished.
 
 An error was encountered while attempting to communicate with this device. (The service is invalid.) 
 Please try rebooting and reconnecting the device. (0xE8000022).
</blockquote>

<hr>

Follow the steps in <a href="https://stackoverflow.com/a/47448911/7443472">Jayprakash Dubey's post above</a>

and

<ul>
<li>Close Xcode;</li>
<li>Delete contents of DerivedData folder ~/Library/Developer/Xcode/DerivedData</li>
<li>Restart Xcode &amp; iPhone</li>
<li>Pair Xcode &amp; iPhone again</li>
<li>&amp; run application</li>
</ul>

blocks|key|2850954|text|做这两个任务来解决你的问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2850955|转到Xcode，然后转到->偏好设置->帐户，然后单击下面的加号图标添加First+id，它必须与您的iphone设备的苹果id相同。|offset|length|style|CODE|2850956|如果第一种解决方案不起作用，Second只需更换电缆|2850957|entityMap^0|0|10|5|0|E|6|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@$D|Q|E|R|F|G]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|K|$]]

Do this Two Task to solve your problem:
<code>First</code> Go to Xcode then -&gt; Preferences -&gt; Accounts then below click the plus icon to add apple id it must me same as your iphone device apple id.
<code>Second</code> Just change the cable if first solution can not work

blocks|key|103685|text|我将我的iPhone更新到最新版本11.0.3，然后重启我的iPhone。重新启动了我的XCode+9，然后它就能工作了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|103686|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I updated my iPhone to the latest version 11.0.3, then restarted my iPhone. Restarted my XCode 9. Then it worked.

blocks|key|2849784|text|对于那些寻找Apple+TV解决方案的人来说，我只是在我的Macbook+Air上使用Apple+TV+4K时遇到了确切的问题"Apple+TV很忙:为Apple+TV准备调试器支持“(2015年初)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2849785|解决方案不是取消配对或重新启动设备。而是切换网络。我把它带到了一个更快、更开放的网络上，它工作得很完美。|2849786|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

For those looking for solution with Apple TV, I just experience the exact problem "Apple TV is busy: Preparing debugger support for Apple TV” with Apple TV 4K with my Macbook Air (Early 2015)

The solution is not to unpair or restart devices. But to switch network. I brought it to a faster and more open network and it works perfectly.

blocks|key|104202|text|这为我解决了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|104203|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

If running beta software and you update the OS, make sure to get the latest Xcode beta also. This fixed it for me.

blocks|key|104205|text|当Xcode试图处理设备时，我让AppCode打开，关闭它就解决了问题。可能是其中一个可能的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|104206|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I left AppCode open while Xcode was trying to process the device, closing it solved the problem. Maybe can be one of the possible issues.

blocks|key|104319|text|对我来说，遵循以下步骤后，它就起作用了|type|unstyled|depth|inlineStyleRanges|entityRanges|data|104320|Step-1转到设备和模拟器|offset|length|style|BOLD|104321|​|104322|📷|atomic|104323|104324|Step-2取消选择Show+as+run+destination和Connect+via+network选项|104325|104326|104327|104328|等待几秒钟来加载+Xcode+，如果你愿意，你也可以重启Xcode。|104329|Step-3按照相同的步骤进入设备和模拟器|104330|勾选这两个选项，就可以正常安装你的应用程序了。|104331|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/59eff93d88a8157d8b0a56e4ecae44fa.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/63851e94a73c8cbf71e8b15a8a0f996c.png^0|0|0|6|0|0|0|1|0|0|0|0|6|0|0|0|1|1|0|0|8|7|0|0|6|0|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1A|8|@$D|1B|E|1C|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|1D|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|1E|8|@]|9|@$D|1F|E|1G|1|1H]]|A|$]]|$1|M|3|I|5|6|7|1I|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1J|8|@$D|1K|E|1L|F|G]]|9|@]|A|$]]|$1|P|3|I|5|6|7|1M|8|@]|9|@]|A|$]]|$1|Q|3|K|5|L|7|1N|8|@]|9|@$D|1O|E|1P|1|1Q]]|A|$]]|$1|R|3|I|5|6|7|1R|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1S|8|@$D|1T|E|1U|F|G]]|9|@]|A|$]]|$1|U|3|V|5|6|7|1V|8|@$D|1W|E|1X|F|G]]|9|@]|A|$]]|$1|W|3|X|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1Z|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15|16|-4]]|17|$5|11|12|13|A|$14|18|16|-4]]]]

For me it Worked after following the below steps

Step-1 Go to Devices and Simulator

<a href="https://i.stack.imgur.com/8U1ny.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8U1ny.png" alt="enter image description here"></a>

Step-2 Deselect Show as run destination and Connect via network Options

<a href="https://i.stack.imgur.com/xqmcT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xqmcT.png" alt="enter image description here"></a>

Wait for Few seconds to Load the Xcode, If you want you can restart Xcode also.

Step-3 Follow the same steps and got to Devices and Simulators

Tick back both the options and it will be normal to install your app back.

blocks|key|104375|text|我在使用Xcode10.2.1的macOS+10.14.5上也遇到了同样的问题。在这里的所有解决方案都不起作用后，我重新启动了Mac，这确实起到了作用……|type|unstyled|depth|inlineStyleRanges|entityRanges|data|104376|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I had the same problem on macOS 10.14.5 using Xcode 10.2.1. After none of the solution here worked for me I restarted the Mac and this did the trick...

blocks|key|2850919|text|因为一条电缆，我也遇到过同样的问题。我把我的第三方USB/照明线缆换成了原来的Apple线缆，它起作用了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2850920|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I've faced the same problem because of a cable. I changed my third party USB/lighting cable into original Apple cable, and it worked.

blocks|key|2851027|text|考虑到这可能与苹果手表有关，我关掉了手表，然后重新启动手机，关闭了所有连接。这样，我就可以毫无问题地连接到我的手机了。但几天前，当我试图解决这个问题时，我拼命地关机又开机。问题未得到解决。我认为有必要关注问题所在，而不是检查设备。苹果官方不得不对此做出一些解释。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2851028|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Thinking it would be apple watch related, I turned off the watch, then restarted my phone for all connections to be closed. This way, I was able to connect to my phone without any problems. but a few days ago I was desperately turning my phone off and on while trying to fix this problem. the problem was not fixed. Instead of checking the devices, I think it is necessary to focus on what the problem is. Apple officials have to explain something about this.

blocks|key|100836|text|“Continue”按钮在错误消息下面。只需按“回车”|type|unstyled|depth|inlineStyleRanges|entityRanges|data|100837|您应确认该设备已列在我的Apple+@+https://appleid.apple.com/account/manage上的“管理设备”中|offset|length|100838|entityMap|0|LINK|mutability|MUTABLE|url|https://appleid.apple.com/account/manage^0|0|K|14|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

The 'Continue' button is under the error message.
Just hit 'Enter' 

You should confirm that the device was listed on my 'Managed Devices' on Apple @ <a href="https://appleid.apple.com/account/manage" rel="nofollow noreferrer">https://appleid.apple.com/account/manage</a>

blocks|key|101032|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|101033|这可能与其他人无关，因为我是iOS开发的新手，这是我第一次尝试在手机上安装应用程序，但我会提供答案，因为它还没有列出。|101034|我经历了重启我的手机，重启Xcode，拔下插头再插回，干净的构建，甚至从设备和模拟器菜单中删除了设备。然而，我相信我的原因是我没有将我的开发者证书添加到我的设备上的信任证书列表中。|101035|我使用的是iOS+10.3.3，所以在手机设置中的导航和措辞可能会略有不同，但在这个问题得到解决之前，我采取的最后一步是信任我的开发者证书，作为我手机上的个人开发者。|101036|要执行此操作，请转到苹果设置>常规>档案和设备管理>(在开发者应用类别下)单击我的电子邮件地址，该地址恰好是我的+ID+>信任开发者|offset|length|style|BOLD|101037|这是否是我的问题的原因，我不确定。然而，这是我在完成上面列出的所有其他步骤后，在我的手机上成功运行应用程序之前采取的最后一步。|101038|entityMap^0|0|0|0|0|1K|A|0|0^^$0|@$1|2|3|-4|4|5|6|Q|7|@]|8|@]|9|$]]|$1|A|3|B|4|5|6|R|7|@]|8|@]|9|$]]|$1|C|3|D|4|5|6|S|7|@]|8|@]|9|$]]|$1|E|3|F|4|5|6|T|7|@]|8|@]|9|$]]|$1|G|3|H|4|5|6|U|7|@$I|V|J|W|K|L]]|8|@]|9|$]]|$1|M|3|N|4|5|6|X|7|@]|8|@]|9|$]]|$1|O|3|-4|4|5|6|Y|7|@]|8|@]|9|$]]]|P|$]]

TL;DR: Settings > General > Profile &amp; Device Management > (Under DEVELOPER APP category) click my email address that happens to be my Apple ID > Trust Developer

This might not be relevant to anyone else, as I am new to iOS development and this was my first attempt to install an application on my phone, but I'll provide the answer as it wasn't yet listed.

I went through restarting my phone, restarting Xcode, unplugging and plugging back in, clean building, and even removed the device from the Devices and Simulators menu. However, I believe the cause for me was that I hadn't added my developer certificate to the listed of trusted certificates on my device. 

I am on iOS 10.3.3 so the navigation and wording in Settings on the phone might be slightly different, but the final step I took before this issue was fixed was to trust my developer certificate as an individual developer on my phone.

To do that, go Settings > General > Profile &amp; Device Management > (Under DEVELOPER APP category) click my email address that happens to be my Apple ID > Trust Developer

Whether or not that was the cause of my problem, I am unsure. This was, however, the last step that I took before the app ran on my phone successfully after doing all of the other steps listed above.

blocks|key|2850999|text|今天，我已经面对了这个问题，并尝试了这里提到的所有内容，以及不同的页面。对我来说什么都不是。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2851000|最后，我重置了iPhone，然后尝试构建应用程序，最后它对我起作用了。|2851001|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Today, I have faced the issue and tried out everything mentioned here and different pages as well. Nothing worked for me.
Lastly, I have reset the iPhone, then tried building the application and finally it worked for me.

blocks|key|100517|text|Solution1：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|100518|Xcode中的|100519|转到window>Devices和模拟器。您将看到connected+device+busy+processing|unordered-list-item|100520|Just移除USB盘，然后重新连接。|100521|100522|Solution2:重启设备也能解决问题。|100523|Solution3:等待4到5分钟也可以。|100524|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|R|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|S|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|U|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|V|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|O|$]]

Solution1:

<ul>
<li>In Xcode Goto window>Devices and Simulators. you will see the connected device busy processing</li>
<li>Just remove the USB and connect again.</li>
</ul>

Solution2:
Restarting the device will also solve problem.

Solution3:
Wait for 4 to 5 minutes will also works.

blocks|key|2849261|text|似乎有很多与同一错误相关的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2849262|Solution：从iMac上删除我安装的所有应用程序，帮助我解决了这个问题。|offset|length|style|BOLD|2849263|entityMap^0|0|0|8|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

There seem to be a lot of issues related to the same error. For me it was the applications which I've installed from another iMac whose files where not present on my MacBook so Xcode was not able to find the files making the debugger to wait forever! 

Solution: Deleting all the application which I've installed from the iMac helped me solve the problem.

I'm looking for more information on the message below. Xcode 9 seems to be hanging for a couple minutes already...
How can I tell Xcode 9 to quickly recognize my previously used device updated to iOS 11?
<blockquote>
.Alex’s iPhone is busy: Preparing debugger support for .Alex’s iPhone 
Xcode will continue when .Alex’s iPhone is finished.
</blockquote>
<a href="https://i.stack.imgur.com/uFf0d.png" rel="noreferrer"><img src="https://i.stack.imgur.com/uFf0d.png" alt="Xcode screenshot for above error message" /></a>

Fixing Xcode 9 issue: "iPhone is busy: Preparing debugger support for iPhone"

我正在寻找关于下面消息的更多信息。Xcode 9似乎已经挂了几分钟了……如何告诉Xcode9快速识别更新到iOS 11的以前使用的设备？ .Alex的iPhone正忙:为.Alex的iPhone准备调试器支持当.Alex的iPhone完成时，Xcode将继续。​​

问修复Xcode9问题："iPhone正忙:为iPhone准备调试器支持“
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问修复Xcode9问题："iPhone正忙:为iPhone准备调试器支持“EN

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问修复Xcode9问题："iPhone正忙:为iPhone准备调试器支持“
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