如果您的Apple Watch与您的 iPhone 建立了有效连接，则它的效果最佳。值得庆幸的是，您通常不必担心这一点，因为只要您将它们保持在近距离
，这两个设备就会自动通过蓝牙进行通信。(Bluetooth)
但是，如果您发现您的Apple Watch经常与您的 iPhone 断开连接（表盘顶部带有斜线的红色 iPhone 形符号表示此情况），请通过以下修复来排除故障并解决问题。
1.检查蓝牙状态
您的Apple Watch和 iPhone 需要使用蓝牙(Bluetooth)进行连接，因此最好先检查蓝牙(Bluetooth)是否在两台设备上都可以运行。
检查 Apple Watch 蓝牙状态
1. 按下数码表冠(Digital Crown)并打开设置(Settings)应用程序（点击齿轮形图标）。
2. 向下滚动并点击蓝牙。
3. 确保蓝牙(Bluetooth)旁边的开关打开。
检查 iPhone 蓝牙状态
1. 打开 iPhone 上的设置(Settings)应用程序。
2. 点击蓝牙(Bluetooth)以访问您的蓝牙(Bluetooth)设置。
3. 确保蓝牙(Bluetooth)旁边的开关打开。
2.切换飞行模式
打开和关闭飞行模式会重新启动(Airplane Mode)Apple Watch和 iPhone上的蓝牙。(Bluetooth)这通常会结束阻止蓝牙(Bluetooth)设备通信的随机连接问题。
(Toggle Airplane Mode)在Apple Watch上(Apple Watch)切换飞行模式
1. 打开Apple Watch上的(Apple Watch)设置(Settings)应用程序。
2.向下滚动(Scroll)并点击飞行模式(Airplane Mode)。
3. 在飞行模式行为(Airplane Mode Behavior)部分下，关闭蓝牙(Bluetooth)。
4. 激活飞行模式(Airplane Mode)旁边的开关。
5.等待(Wait)10 秒，然后关闭飞行模式(Airplane Mode)。
在 iPhone 上切换飞行模式
1. 打开 iPhone 上的设置(Settings)应用程序。
2. 打开飞行模式(Airplane Mode)旁边的开关。如果这没有将蓝牙(Bluetooth)旁边的状态更改为关闭(Off)，请点击蓝牙(Bluetooth)，禁用蓝牙(Bluetooth)，然后返回上一个屏幕。
3.等待(Wait)10 秒，然后关闭飞行模式(Airplane Mode)。如果您必须在上一步中手动禁用蓝牙，(Bluetooth)蓝牙(Bluetooth)旁边的状态应自动更改为开启。
3.重启设备
如果蓝牙(Bluetooth)不是一个因素，请尝试重新启动Apple Watch和 iPhone。这是另一个快速修复程序，可以解决由系统软件的随机错误和故障引起的问题。
重启 Apple Watch
1. 按住侧面(Side)按钮，直到您看到关机(Power Off)屏幕。
2. 向右拖动电源(Power)图标并等待 30 秒。
3. 再次按住侧边(Side)按钮，直到您看到Apple标志以重新开启手表。
重启 iPhone
1. 打开设置(Settings)应用程序并点击General > Shut Down。
2. 向右拖动电源(Power)图标并等待 30 秒。
3. 按住Side/Power按钮，直到您看到Apple标志以重新打开您的 iPhone。
4.更新系统软件
更新Apple Watch和 iPhone 系统软件也可以解决持续存在的通信问题。只要您可以访问Wi-Fi ，您就可以使用以下步骤
更新两台Apple设备。(Apple)
(Update System Software)在Apple Watch上(Apple Watch)更新系统软件
1. 将Apple Watch放在磁性充电器上。您还需要至少收取 50% 的费用才能开始更新。
2. 从表盘底部向上滑动，打开控制中心(Control Center)。然后，点击并按住 Wi-Fi 图标并将其连接到可用的 Wi-Fi 网络（如果尚未连接）。
3. 按下数码表冠(Digital Crown)并点击设置。
4.向下滚动(Scroll)并点击软件更新(Software Update)。
5.等到(Wait)您的智能手表扫描更新。
6. 点击下载(Download)并安装(Install)将 watchOS 更新到最新版本。
在 iPhone 上更新系统软件
1. 打开 iPhone 上的设置(Settings)应用程序。
2. 点击Wi-Fi并连接到可用的Wi-Fi网络（如果尚未连接）。然后，返回上一个屏幕。
3. 点击常规。
4. 点击软件更新。
5.等到(Wait)您的手机扫描更新。
6. 点击下载(Download)并安装(Install)以更新 iOS。如果电池电量低于 50%，您必须将 iPhone 连接到充电电源才能完成更新。
相关： Apple Watch(Apple Watch)或 iPhone上的操作系统更新是否失败？了解(Learn)如何修复卡住的 watchOS(fix stuck watchOS)或iOS 更新(iOS updates)。
5.在 iPhone 上
重置网络设置(Reset Network Settings)
如果Apple Watch(Apple Watch)和 iPhone之间的连接问题仍然存在，请尝试重置 iOS 设备上的网络设置。这可以纠正可能损坏的蓝牙(Bluetooth)配置。
注意：此过程也会断开您与任何 Wi-Fi 网络的连接，因此请确保在开始之前知道您的 Wi-Fi 密码，以便重新连接。
1. 打开 iPhone 上的设置(Settings)应用程序。
2. 转到General > Transfer或重置(Reset)iPhone >重置(Reset)。
3. 点击重置网络设置。
4. 输入您的设备密码。
5.再次点击重置网络设置(Tap Reset Network Settings)。
6.取消配对并重新连接手表
如果上述修复均无济于事，则下一个合乎逻辑的步骤是将Apple Watch 重置为出厂默认设置(reset your Apple Watch to factory defaults)。我们建议您通过 iPhone 上的Apple Watch应用程序执行此操作，因为这会创建您可以稍后恢复的最新数据备份。
使用 iPhone 重置 Apple Watch
如果您的Apple Watch与已配对的 iPhone 建立了有效连接：
1. 打开Apple Watch应用并切换到我的手表(My Watch)选项卡。
2. 点击屏幕左上角
的所有手表选项。(All Watches)
3. 点击Apple Watch旁边的信息(Info)图标。
4. 点击取消配对 Apple Watch。
5.点击取消配对 [(Tap Unpair [) Your Name's] Apple Watch进行确认。
通过 watchOS 重置 Apple Watch
如果您的Apple Watch没有与您的 iPhone 建立有效连接：
1. 按下数码表冠(Digital Crown)并点击设置。
2. 点击常规。
3. 向下滚动并点击重置。
4. 点击删除所有内容(Erase All Content)和设置(Settings)。
5. 输入您的设备密码，然后点击全部擦除(Erase All)以确认。
然后将 Apple Watch 重新连接到您的 iPhone(reconnecting the Apple Watch to your iPhone)。如果您的 iOS 设备有Apple Watch数据的备份，您可以恢复它(restore it)。
强关系
通常只需切换飞行模式或重新启动系统软件即可解决(Airplane Mode)Apple Watch和 iPhone 之间的通信问题。只有在问题反复出现时才诉诸高级故障排除。如果没有任何效果并且Apple Watch不断断开连接，请联系 Apple 支持(contact Apple Support)以了解下一步该怎么做。
6 Fixes When Apple Watch Keeps Disconnecting From iPhone
Your Apple Watch works bеst if it has an active connection to your iPhone. Thankfully, you don’t usually havе to worry about that because both devices automatically communicate over Bluetooth so long as you keep them in clоse range.
But if you find that your Apple Watch frequently disconnects from your iPhone (a red iPhone-shaped symbol with a slash at the top of the watch face denotes that), go through the fixes below to troubleshoot and resolve the issue.
1. Check Bluetooth Status
Your Apple Watch and iPhone require Bluetooth for connectivity, so it’s good to kick things off by checking if Bluetooth is operational on both devices.
Check Apple Watch Bluetooth Status
1. Press the Digital Crown and open the Settings app (tap the gear-shaped icon).
2. Scroll down and tap Bluetooth.
3. Make sure that the switch next to Bluetooth is on.
Check iPhone Bluetooth Status
1. Open the Settings app on your iPhone.
2. Tap Bluetooth to access your Bluetooth settings.
3. Make sure that the switch next to Bluetooth is on.
2. Toggle Airplane Mode
Turning Airplane Mode on and off restarts Bluetooth on your Apple Watch and iPhone. That usually ends random connectivity issues preventing Bluetooth devices from communicating.
Toggle Airplane Mode on Apple Watch
1. Open the Settings app on your Apple Watch.
2. Scroll down and tap Airplane Mode.
3. Under the Airplane Mode Behavior section, turn Bluetooth off.
4. Activate the switch next to Airplane Mode.
5. Wait for 10 seconds and deactivate Airplane Mode.
Toggle Airplane Mode on iPhone
1. Open the Settings app on your iPhone.
2. Turn on the switch next to Airplane Mode. If that doesn’t change the status next to Bluetooth to Off, tap Bluetooth, disable Bluetooth, and head back to the previous screen.
3. Wait for 10 seconds and deactivate Airplane Mode. If you had to disable Bluetooth manually in the previous step, the status next to Bluetooth should automatically change to On.
3. Restart Devices
If Bluetooth isn’t a factor, try restarting your Apple Watch and iPhone. It’s another quick fix that can resolve issues caused by random bugs and glitches with the system software.
Restart Apple Watch
1. Press and hold the Side button until you see the Power Off screen.
2. Drag the Power icon to the right and wait for 30 seconds.
3. Hold down the Side button again until you see the Apple logo to turn your watch back on.
Restart iPhone
1. Open the Settings app and tap General > Shut Down.
2. Drag the Power icon to the right and wait for 30 seconds.
3. Hold down the Side/Power button until you see the Apple logo to turn your iPhone back on.
4. Update System Software
Updating the Apple Watch and iPhone system software could also resolve persistent communication issues. As long as you have access to Wi-Fi, you can update both Apple devices using the following steps.
Update System Software on Apple Watch
1. Place your Apple Watch on its magnetic charger. You’ll also need it to be charged to at least 50% to start the update.
2. Swipe up from the bottom of the watch face to open the Control Center. Then, tap and hold the Wi-Fi icon and connect it to an available Wi-Fi network (if it isn’t connected already).
3. Press the Digital Crown and tap Settings.
4. Scroll down and tap Software Update.
5. Wait until your smartwatch scans for newer updates.
6. Tap Download and Install to update watchOS to its latest version.
Update System Software on iPhone
1. Open the Settings app on your iPhone.
2. Tap Wi-Fi and connect to an available Wi-Fi network (if it isn’t connected already). Then, head back to the previous screen.
3. Tap General.
4. Tap Software Update.
5. Wait until your phone scans for newer updates.
6. Tap Download and Install to update iOS. If the battery level is below 50%, you must connect your iPhone to a charging source to complete the update.
Related: Do operating system updates fail on your Apple Watch or iPhone? Learn how to fix stuck watchOS or iOS updates.
5. Reset Network Settings on iPhone
If connectivity problems persist between your Apple Watch and iPhone, try resetting the network settings on the iOS device. That could rectify a potentially corrupt Bluetooth configuration.
Note: This process will disconnect you from any Wi-Fi networks as well, so make sure you know the password to your Wi-Fi before you start so you can connect it again.
1. Open the Settings app on your iPhone.
2. Go to General > Transfer or Reset iPhone > Reset.
3. Tap Reset Network Settings.
4. Enter your device passcode.
5. Tap Reset Network Settings again.
6. Unpair and Reconnect Watch
If none of the fixes above help, the next logical step is to reset your Apple Watch to factory defaults. We recommend that you do that through the Apple Watch app on the iPhone because that creates an up-to-date backup of your data that you can restore later.
Reset Apple Watch Using iPhone
If your Apple Watch has an active connection to the paired iPhone:
1. Open the Apple Watch app and switch to the My Watch tab.
2. Tap the All Watches option at the top left corner of the screen.
3. Tap the Info icon next to your Apple Watch.
4. Tap Unpair Apple Watch.
5. Tap Unpair [Your Name’s] Apple Watch to confirm.
Reset Apple Watch via watchOS
If your Apple Watch does not have an active connection to your iPhone:
1. Press the Digital Crown and tap Settings.
2. Tap General.
3. Scroll down and tap Reset.
4. Tap Erase All Content and Settings.
5. Enter your device passcode and tap Erase All to confirm.
Follow that by reconnecting the Apple Watch to your iPhone. If your iOS device has a backup of your Apple Watch data, you can restore it.
Strong Relationship
Toggling Airplane Mode or rebooting the system software is all it usually takes to resolve communication issues between the Apple Watch and iPhone. Only resort to advanced troubleshooting if the problem occurs again and again. If nothing works and the Apple Watch keeps disconnecting, contact Apple Support to figure out what to do next.
