Wi-Fi 通话(Wi-Fi calling)可让您通过 Wi-Fi 连接拨打和接听语音电话和短信。它很容易设置(easy to set up)（在 iPhone 和Android上），但在某些情况下Wi-Fi通话无法正常工作。
我们重点介绍了影响该功能的一些因素，以及当 Wi-Fi 通话无法在Android(Android)设备上运行时尝试的九个故障排除步骤。
1. 确认运营商是否支持(Carrier Support)Wi-Fi 通话(Wi-Fi Calling)
(Wi-Fi)如果您的移动运营商不支持该功能，则Wi-Fi通话将无法使用。因此，即使您拥有运行最新 Android 版本的最新旗舰智能手机，如果您的运营商在您所在的国家或地区不提供Wi-Fi服务，您也无法通过 Wi-Fi 拨打电话。(Wi-Fi)
请联系您的手机运营商或查看他们的网站，以确认您所在地区的Wi-Fi通话服务的可用性。
2. 开启 Wi-Fi 通话
如果您的运营商支持Wi-Fi通话，但您仍然无法通过Wi-Fi通话，请确认您的设备上的Wi-Fi通话处于活动状态。请注意，启用Wi-Fi通话的步骤可能会因设备上安装的品牌和Android版本而异。
在某些设备上，您可以通过设置(Settings)>通话(Calls)启用 Wi-Fi 通话，然后点击WI-Fi 通话(WI-Fi calling)选项。您还可以从“电话(Phone)”应用启用 Wi-Fi 通话。
打开电话(Phone)应用程序，点击右上角的三点菜单图标(three-dot menu icon)，选择设置(Settings)，然后检查 Wi-Fi 通话。
如果在电话(Phone)应用程序设置菜单中没有找到 Wi-Fi 通话选项，请转到设置(Settings)>网络和互联网(Network & internet)>移动网络(Mobile network)>高级(Advanced)，然后选择Wi-Fi 通话(Wi-Fi Calling)。
仍然无法在您的设备上找到 Wi-Fi 通话？在“设置”(Settings)应用中执行快速搜索。打开设置(Settings)并在搜索栏中输入Wi-Fi 通话。(Wi-Fi calling)如果搜索未返回任何结果，则表示您的设备或移动运营商不支持Wi-Fi通话。
3.取出(Remove)并重新插入您的 SIM 卡(Reinsert Your SIM Card)
在您的设备中找不到激活Wi-Fi通话功能的选项？弹出(Ejecting)并重新插入SIM卡可能会将功能和其他重要配置设置推送到您的设备。
我们建议您在弹出SIM(SIM)卡之前关闭手机。重新插入SIM卡，打开设备电源，然后保存或接受运营商发送到设备的任何更新。
4.启用飞行模式
蜂窝网络服务有时会中断 Wi-Fi 通话功能。因此，您可能需要暂时禁用设备的移动网络才能拨打 Wi-Fi 电话。
打开设备的通知中心(Notification Center)并点击飞机图标(airplane icon)以启用飞行模式(enable airplane mode)。或者，转到设置(Settings)>网络和互联网(Network & internet)>高级(Advanced)并打开飞行模式(Aeroplane mode)（或飞行模式(Airplane mode)）。
将您的手机连接到Wi-Fi连接并检查您是否能够通过Wi-Fi拨打电话。
5. 刷新您的路由器(Router)或 Wi-Fi 连接
您需要具有 Internet 访问权限的Wi-Fi网络连接才能通过(Wi-Fi)Wi-Fi拨打电话。如果您的Wi-Fi 连接速度较慢或断断续续， (Wi-Fi connection is slow or keeps disconnecting intermittently)Wi-Fi通话可能无法正常工作。
如果启用了 Wi-Fi(Wi-Fi)通话，但您无法拨打或接听电话和短信，则您的Wi-Fi连接可能存在问题。将其他设备连接到网络并检查它们是否可以访问互联网。您还应该尝试将手机连接到不同的Wi-Fi网络。
如果您的设备的Wi-Fi通话在其他网络上正常工作，那么您的路由器肯定是问题所在。重新启动路由器，重新加入Wi-Fi网络，并确保您的设备离路由器不太远。移除可能导致网络干扰的物体或设备。更好(Better)的是，使用Wi-Fi 扩展器(Wi-Fi extender)来增强网络强度(boost the network strength)。
还有一件事：联系您的互联网服务提供商 ( ISP ) 以确认您所在地区是否存在服务停机时间。如果出现中断，请等到您的ISP解决问题并恢复 Internet 访问。如果问题仍然存在，请更新路由器的固件或将其设置重置为出厂默认设置。
6.更新或降级Android
要在Android(Android)中使用 Wi-Fi 通话，您的设备必须至少运行Android 6.0。为获得最佳体验，请确保您的设备运行的是最新的Android版本。
转到设置(Settings)>系统(System)>高级(Advanced)>系统更新(System Update)，点击检查更新(Check for updates)，然后安装任何可用的更新。
如果安装软件更新后Wi-Fi通话停止正常工作，则更新中的错误可能会破坏该功能。在这种情况下，请将您的 Android 操作系统降级到稳定版本，并在(downgrade your Android OS)Google解决问题后重新更新您的设备。
7. 强制停止运营商服务
运营商(Carrier) 服务(Services)是一个系统应用程序，可促进您的设备和移动运营商之间的信息交换和通信。如果您在拨打 Wi-Fi 时遇到困难，强制停止运营商(Carrier) 服务(Services)可以解决问题。
- 打开手机的设置(Settings)应用，在搜索框中输入运营商服务，然后选择(carrier services)运营商服务(Carrier Services)。
- 点击强制停止(Force Stop)并在确认提示中选择确定。(OK)
尝试使用 WI-Fi 通话，看看强制停止运营商(Carrier) 服务(Services)是否解决了问题。如果问题仍然存在，请删除应用程序的缓存文件和数据。
- 选择存储和缓存(Storage & cache)并点击清除缓存(Clear Cache)。
- 然后，点击清除存储(Clear Storage)图标并选择确定(OK)继续。
8.重启你的手机
简单的设备重启可以修复Android(Android)中与网络相关的问题和其他系统故障。确保(Make)在重新启动设备之前手动关闭所有活动应用程序，以免丢失任何未保存的数据。
按住设备的电源按钮(power button)或锁定按钮(lock button)，然后在电源菜单上选择重新启动。(Restart)
9.重置网络设置
如果所有故障排除步骤都无法将 Wi-Fi 呼叫恢复到您的设备，则仅作为最后手段执行此操作。执行网络重置将删除设备上所有以前保存的 Wi-Fi 连接。其他网络组件（蓝牙(Bluetooth)、VPN、移动数据等）也将重置为出厂设置。
然而，从积极的方面来说，重置设备的网络设置可以解决Wi-Fi通话问题。
- 转到设置(Settings)，点击系统(System)，展开高级(Advanced)部分，然后选择重置选项(Reset options)。
- 选择重置 Wi-Fi、移动和蓝牙(Reset Wi-Fi, mobile & Bluetooth)，然后选择重置设置(Reset Settings)以继续。
- 输入您手机的密码、PIN或安全模式，然后在确认提示中点击重置设置。(Reset Settings)
拨打无休止的 Wi-Fi 电话
我们相信，这些故障排除技巧中至少有一个可以解决您Android手机上的Wi-Fi通话问题。如果您仍然无法通过Wi-Fi拨打或接听电话，则您的设备或蜂窝网络提供商（或两者）可能不支持Wi-Fi通话。
Wi-Fi Calling Not Working on Android? 9 Things to Try
Wi-Fi calling lets you make and receive voice calls and text messages over a Wi-Fi connection. It is easy to set up (on iPhone and Android), but there are instances when Wi-Fi calling fails to work.
We highlight some factors that affect the feature and nine troubleshooting steps to try when Wi-Fi calling isn’t working on Android devices.
1. Confirm Carrier Support for Wi-Fi Calling
Wi-Fi calling won’t work if your mobile carrier doesn’t support the feature. So, even if you have the latest flagship smartphone running the latest Android version, you cannot make calls over Wi-Fi if your carrier doesn’t offer the service in your country or region.
Contact your cellular carrier or check their website to confirm the availability of Wi-Fi calling services in your region.
2. Enable Wi-Fi Calling
If your carrier supports Wi-Fi calling but you still can’t call over Wi-Fi, confirm that Wi-Fi calling is active on your device. Note that the steps to enable Wi-Fi calling may vary depending on the brand and Android version installed on your device.
On some devices, you can enable Wi-Fi calling via Settings > Calls and tap the WI-Fi calling option. You could also enable Wi-Fi calling from the Phone app.
Open the Phone app, tap the three-dot menu icon in the top-right corner, select Settings, and check for Wi-Fi Calling.
If you don’t find a Wi-Fi calling option in the Phone app settings menu, go to Settings > Network & internet > Mobile network > Advanced and select Wi-Fi Calling.
Still can’t find Wi-Fi calling on your device? Perform a quick search in the Settings app. Open Settings and enter Wi-Fi calling in the search bar. If the search returns no result, that means your device or mobile carrier doesn’t support Wi-Fi calling.
3. Remove and Reinsert Your SIM Card
Can’t find the option to activate the Wi-Fi calling feature in your device? Ejecting and re-inserting your SIM card may push the feature and other important configuration settings to your device.
We recommend shutting down your phone before ejecting the SIM card. Re-insert the SIM card, power on your device, and save or accept any update your carrier sends to your device.
4. Enable Airplane Mode
Cellular service sometimes disrupts the Wi-Fi calling feature. Therefore, you may need to temporarily disable your device’s mobile network to make Wi-Fi calls.
Open your device’s Notification Center and tap the airplane icon to enable airplane mode. Alternatively, go to Settings > Network & internet > Advanced and toggle on Aeroplane mode (or Airplane mode).
Connect your phone to a Wi-Fi connection and check if you’re able to make calls over Wi-Fi.
5. Refresh Your Router or Wi-Fi Connection
You need a Wi-Fi network connection with internet access to make phone calls over Wi-Fi. Wi-Fi calling may not work if your Wi-Fi connection is slow or keeps disconnecting intermittently.
If Wi-Fi calling is enabled but you can’t make or receive calls and texts, there’s likely a problem with your Wi-Fi connection. Connect other devices to the network and check if they have internet access. You should also try connecting your phone to a different Wi-Fi network.
If your device’s Wi-Fi calling works on other networks, your router is definitely the problem. Restart the router, rejoin the Wi-Fi network, and ensure your device isn’t too far from the router. Remove objects or appliances that could cause network interference. Better yet, use a Wi-Fi extender to boost the network strength.
One more thing: Contact your internet service provider (ISP) to confirm whether there’s a service downtime in your region. If there’s an outage, wait until your ISP fixes the problem and restores internet access. Update your router’s firmware or reset its settings to factory default if the problem persists.
6. Update or Downgrade Android
To use Wi-Fi calling in Android, your device must be running at least Android 6.0. For the best experience, ensure your device is running the latest Android version.
Go to Settings > System > Advanced > System Update, tap Check for updates, and install any available update.
If Wi-Fi calling stopped working correctly after installing a software update, a bug in the update probably broke the feature. In that case, downgrade your Android OS to the stable version and re-update your device when Google fixes the issue.
7. Force Stop Carrier Services
Carrier Services is a system app that fosters information exchange and communication between your device and mobile carrier. If you’re experiencing difficulties calling Wi-Fi, force-stopping Carrier Services could resolve the problem.
- Open your phone’s Settings app, enter carrier services in the search box, and select Carrier Services.
- Tap Force Stop and select OK on the confirmation prompt.
Try using WI-Fi calling and see if force-stopping Carrier Services fixed the problem. Delete the app’s cache files and data if the issue continues.
- Select Storage & cache and tap Clear Cache.
- Afterward, tap the Clear Storage icon and select OK to proceed.
8. Restart Your Phone
A simple device reboot can fix network-related issues and other system malfunctions in Android. Make sure you manually close all active apps before rebooting your device, so you don’t lose any unsaved data.
Press and hold your device’s power button or lock button and select Restart on the power menu.
9. Reset Network Settings
Do this only as a last resort, if all troubleshooting steps fail to restore Wi-Fi calling to your device. Performing a network reset will delete all previously saved Wi-Fi connections on your device. Other network components (Bluetooth, VPN, mobile data, etc.) will also be reset to factory settings.
On the positive side, however, resetting your device’s network setting could fix Wi-Fi calling issues.
- Go to Settings, tap System, expand the Advanced section, and select Reset options.
- Select Reset Wi-Fi, mobile & Bluetooth and select Reset Settings to proceed.
- Enter your phone’s passcode, PIN, or security pattern and tap Reset Settings on the confirmation prompt.
Make Endless Wi-Fi Calls
We’re confident that at least one of these troubleshooting tips will fix Wi-Fi calling problems on your Android phone. If you still can’t make or receive calls over Wi-Fi, your device or cellular network provider (or both) probably doesn’t support Wi-Fi calling.
