Wi-Fi呼叫(Wi-Fi calling)电话，也被称为VoWifi，是一项已经存在很长时间的技术。然而，移动运营商采用它的速度很慢，即使在今天，并非所有移动运营商和智能手机都支持Wi-Fi 语音。(Voice over Wi-Fi)您想知道什么是Wi-Fi 通话(Wi-Fi calling)、为什么它对您有好处以及如何使用它吗？如果您这样做，请阅读我们的指南以了解有关VoWiFi以及如何在手机上使用它的更多信息：
什么是Wi-Fi通话（Wi - Fi(Wi-Fi)语音(Voice)）？
Wi-Fi 通话(Wi-Fi calling)是一项名为“ Voice over Wi-Fi ”的服务的另一个名称，它允许手机用户使用他们的智能手机使用 Wi-Fi(lets mobile phone subscribers use their smartphones to make calls using Wi-Fi)网络而不是移动网络拨打电话。Wi-Fi 通话也称为VoWiFi。
Wi-Fi(Voice over Wi-Fi)语音支持语音和视频通话(voice and video calls)，启用后，您拨打的电话是高清（高清(High Definition)），这意味着它们的质量优于标准电话。如果同时提供VoLTE（Voice over LTE），支持并开启Wi-Fi 通话的(Wi-Fi calling)智能手机可以在两种服务之间无缝切换，不会出现电话通话中断的情况。
事实证明， VoWiFi在 4G (VoWiFi)LTE移动覆盖不佳等情况下很有用。如果您的移动信号接收不佳，并且您可以连接到无线网络或热点(wireless network or hotspot)，Wi-Fi 通话(Wi-Fi calling)可确保您享受高质量的通话。
即使您的智能手机连接到无线网络(wireless network)，Wi-Fi 通话(Wi-Fi calling)也不是每个人都可以访问的服务。为了能够从中受益，必须满足两个条件：您的智能手机和您的移动运营商都必须提供对 Wi-Fi 语音的支持(both your smartphone and your mobile operator must offer support for Voice over Wi-Fi)。
现在您知道什么是Wi-Fi 通话(Wi-Fi calling)，让我们看看如何在Android智能手机和 iPhone 上启用它。
如何在 Android 上启用 Wi-Fi 通话 ( VoWiFi )
接下来的步骤和屏幕截图是在运行Android 9的(Android 9)华为 P20 智能手机(Huawei P20 smartphone)上制作的。如果您使用的是不同的Android 版本(Android version)或不同制造商制造的智能手机，情况可能会有所不同，但基本要素是相同的。
第一步是打开Android 智能手机(Android smartphone)的设置(Settings)。一种快速的方法是从应用程序抽屉中点击(apps drawer)设置(Settings)应用程序。然后，在设置(Settings)屏幕上，点击无线和网络(Wireless & networks)。
在无线和网络(Wireless & networks)屏幕上，打开移动网络(Mobile network)类别。
注意：(NOTE:)如果您在智能手机上使用 Android 10，请转至：Settings -> Mobile network -> Mobile data。如果您不知道自己的Android版本是什么，请阅读：如何在智能手机或平板电脑(smartphone or tablet)上查看Android 版本(Android version)。
这会将您带到移动网络(Mobile network)设置：查找名为Wi-Fi 通话(Wi-Fi calling)的条目。默认情况下它可能未启用，因此您的智能手机可能还会向您显示它已禁用(Disabled)或关闭(Off)。点击它。
在Wi-Fi 通话(Wi-Fi calling)屏幕上，您的智能手机可能会提供有关Wi-Fi 通话(Wi-Fi calling)用途的说明。例如，华为(Huawei)告诉我们“当 Wi-Fi 通话开启时，您的手机可以通过 Wi-Fi 网络或运营商网络路由呼叫，具体取决于您的偏好以及哪个信号更强。在打开此功能之前，请与您的承运人有关费用和其他细节的信息。” ("When Wi-Fi calling is on, your phone can route calls via Wi-Fi networks or your carrier's network, depending on your preference and which signal is stronger. Before turning on this feature, check with your carrier regarding fees and other details.")开启Wi-Fi 通话(Wi-Fi calling)开关。
在启用Wi-Fi 通话(Wi-Fi calling)之前，Android 可能会警告您“您将无法通过 Wi-Fi 拨打紧急电话”。("You will not be able to place emergency calls over Wi-Fi.")如果您看到此消息，仅表示如果您拨打911（在美国）或 112（在欧盟）等紧急(United)服务(States)，您(European Union)的(emergency service)智能手机将使用移动网络，而不是VoWiFi。选择启用(Enable)以继续。
现在，您的智能手机上启用了 Wi-Fi 语音，(Voice over Wi-Fi)因此您可以在连接到无线网络时享受(wireless network)高清语音(HD voice)和/或视频通话。
但是，您可能还需要选择是更喜欢使用Wi-Fi还是 4G LTE进行(LTE)高清语音(HD voice)（或视频）通话。有些人更喜欢使用 4G LTE ，并且只有在 4G LTE信号接收不佳时才让他们的智能手机切换到VoWiFi 。要选择您喜欢的模式，请点击模式(Mode)。
然后，选择您希望使用的Wi-Fi 通话模式：(Wi-Fi calling Mode)首选 Wi-Fi(Wi-Fi preferred,)或4G 网络(4G network preferred)。
返回移动网络(Mobile network)设置屏幕，您可以看到您的Android 智能手机(Android smartphone)上现已启用Wi-Fi 通话(Wi-Fi calling)。
此外，每当您的智能手机使用Wi-Fi 通话(Wi-Fi Calling)时，Android都会在屏幕顶部的状态栏上显示一个小的(status bar)VoWiFi图标。
如何在 iPhone 上启用 Wi-Fi 通话 ( VoWiFi )
接下来的步骤和屏幕截图是在运行 iOS 13 的 iPhone SE 上制作的。如果您使用的是不同的 iOS 版本或不同的iPhone 型号(iPhone model)，看起来可能会有所不同，但基本要素是相同的。
在 iPhone 上，通过点击主屏幕上的图标打开(home screen)设置(Settings)应用程序。
然后，在“设置”(Settings)屏幕上，滚动直到找到名为“电话(Phone)”的条目。
电话(Phone)屏幕有很多选项，其中之一称为Wi -Fi 通话(Wi-Fi Calling)。如果它说它已打开，(On,)那么您已经在使用Voice over Wi-Fi。但是，它可能默认为关闭(Off)，因此请点击它。
在Wi-Fi 通话(Wi-Fi Calling)设置屏幕上，您应该会看到一个名为“此 iPhone 上的 Wi-Fi 通话”的开关。("Wi-Fi Calling on This iPhone.")点击它以启用它。
iOS然后会告诉你“当你加入网络时，网络连接的国家可能会发送给你的运营商，你的蜂窝身份可能会发送给Wi-Fi网络运营商。城市可能会发送给运营商用于路由短代码呼叫。” ("When you join a network, the country where the network connection is made may be sent to your carrier, and your cellular identity may be sent to the Wi-Fi network operator. The city may be sent to the carrier for routing short code calls.")所有这些都是VoWiFi工作的必要条件，因此如果您对它们没问题，请点击启用(Enable)以继续。
就是这样：现在，只要您连接到无线网络或热点，您的 iPhone 就可以使用(wireless network or hotspot)Wi-Fi 通话(Wi-Fi Calling)，即使您的运营商的覆盖范围不是很大，您也可以享受高质量的语音和/或视频通话。
每次您的 iPhone 使用Wi-Fi 通话(Wi-Fi Calling)时，iOS 都会通过在屏幕顶部的状态栏上显示(status bar)Wi-Fi文本来发出信号。
您是否(Did)在智能手机上启用了Wi-Fi通话（Wi -Fi语音(Voice)）？
现在您知道什么是Wi-Fi 通话(Wi-Fi calling)以及如何在Android智能手机和 iPhone 上使用此服务。那你打开VoWiFi了吗？您是否使用(Did)Wi-Fi 语音(Voice over Wi-Fi)拨打电话？它们听起来是否(Did)比通过运营商的移动网络(mobile network)进行的常规语音通话更好？在下面的评论部分(comment section)分享(Share)您的意见。
What is Wi-Fi calling? How do I use Wi-Fi calling on Android and iPhone?
Wi-Fi calling for phones, also dubbed VoWifi, is a technology that has existed for a long time. However, its adoption by mobile carriers is slow, and even today, Voice over Wi-Fi is not supported by all mobile operators and smartphones. Do you want to know what Wi-Fi calling is, why it's good for you, and how to use it? If you do, read our guide to find out more about VoWiFi and how to use it on your mobile phone:
What is Wi-Fi calling (Voice over Wi-Fi)?
Wi-Fi calling is another name for a service called Voice over Wi-Fi that lets mobile phone subscribers use their smartphones to make calls using Wi-Fi networks instead of mobile networks. Wi-Fi calling is also referred to as VoWiFi.
Voice over Wi-Fi supports both voice and video calls, and, when enabled, the calls you make are in HD (High Definition), meaning that their quality is better than standard phone calls. If VoLTE (Voice over LTE) is also available at the same time, smartphones that support and have Wi-Fi calling enabled can seamlessly switch between the two services, so that no interruptions in phone conversations occur.
VoWiFi can prove to be useful in situations such as poor 4G LTE mobile coverage. If your mobile reception is poor, and you can connect to a wireless network or hotspot, Wi-Fi calling ensures that you enjoy high-quality phone calls.
Even if your smartphone is connected to a wireless network, Wi-Fi calling is not a service that everybody has access to. In order to be able to benefit from it, there are two conditions that must be fulfilled: both your smartphone and your mobile operator must offer support for Voice over Wi-Fi.
Now that you know what Wi-Fi calling is, let's see how to enable it on Android smartphones, as well as on iPhones.
How to enable Wi-Fi calling (VoWiFi) on Android
The next steps and screenshots are made on a Huawei P20 smartphone running Android 9. If you're using a different Android version or a smartphone made by a different manufacturer, things might look a little different, but the essentials are the same.
The first step is to open the Settings of your Android smartphone. A quick way to do it is to tap on the Settings app from the apps drawer. Then, on the Settings screen, tap on Wireless & networks.
On the Wireless & networks screen, open the Mobile network category.
NOTE: If you use Android 10 on your smartphone, go to: Settings -> Mobile network -> Mobile data. If you don't know what version of Android you have, read: How to check the Android version on your smartphone or tablet.
This takes you to the Mobile network settings: look for an entry called Wi-Fi calling. It's probably not enabled by default, so your smartphone might also show you that it's Disabled or Off. Tap on it.
On the Wi-Fi calling screen, your smartphone might offer an explanation of what Wi-Fi calling is used for. For example, Huawei tells us that "When Wi-Fi calling is on, your phone can route calls via Wi-Fi networks or your carrier's network, depending on your preference and which signal is stronger. Before turning on this feature, check with your carrier regarding fees and other details." Enable the Wi-Fi calling switch.
Before enabling Wi-Fi calling, Android might warn you that "You will not be able to place emergency calls over Wi-Fi." If you see this message, it only means that if you call an emergency service such as 911 (in the United States) or 112 (in the European Union), your smartphone is going to use the mobile network, not VoWiFi. Choose Enable to continue.
Now, Voice over Wi-Fi is enabled on your smartphone so you can enjoy HD voice and/or video calls whenever you're connected to a wireless network.
However, you might also want to choose whether you prefer to make HD voice (or video) calls using Wi-Fi or 4G LTE. Some people prefer to use 4G LTE and have their smartphones switch to VoWiFi only if the 4G LTE signal reception is poor. To choose your preferred mode, tap on Mode.
Then, choose the Wi-Fi calling Mode that you'd rather use: Wi-Fi preferred, or 4G network preferred.
Going back to the Mobile network settings screen, you can see that Wi-Fi calling is now enabled on your Android smartphone.
Furthermore, whenever your smartphone uses Wi-Fi Calling, Android displays a small VoWiFi icon on the status bar from the top of the screen.
How to enable Wi-Fi calling (VoWiFi) on your iPhone
The next steps and screenshots are made on iPhone SE running iOS 13. If you're using a different iOS version or a different iPhone model, things might look a little different, but the essentials are the same.
On your iPhone, open the Settings app by tapping on its icon from your home screen.
Then, on the Settings screen, scroll until you find the entry called Phone.
The Phone screen has quite a few options, and one of them is called Wi-Fi Calling. If it says that it's On, then you're already using Voice over Wi-Fi. However, it's probably Off by default, so tap on it.
On the Wi-Fi Calling settings screen, you should see a switch called "Wi-Fi Calling on This iPhone." Tap on it to enable it.
iOS then tells you that "When you join a network, the country where the network connection is made may be sent to your carrier, and your cellular identity may be sent to the Wi-Fi network operator. The city may be sent to the carrier for routing short code calls." All of these are necessary things for VoWiFi to work, so if you're OK with them, tap Enable to continue.
That's it: now your iPhone can use Wi-Fi Calling whenever you're connected to a wireless network or hotspot so that you can enjoy high-quality voice and/or video calls even if your carrier's coverage isn't great.
Each time your iPhone uses Wi-Fi Calling, iOS signals it by displaying the Wi-Fi text on the status bar at the top of the screen.
Did you enable Wi-Fi calling (Voice over Wi-Fi) on your smartphone?
Now you know what Wi-Fi calling is and also how to use this service both on Android smartphones and iPhones. So did you turn VoWiFi on? Did you make phone calls using Voice over Wi-Fi? Did they sound better than regular voice calls made through your carrier's mobile network? Share your opinions in the comment section below.
