在重要的工作电话或在线游戏比赛中丢失WiFi可能会很烦人。(WiFi)修复不断与Wi-Fi(Wi-Fi)断开连接的 iPhone既简单又复杂，具体取决于问题的根本原因。
让你的 iPhone 进入和退出飞行模式(airplane mode)可能会解决这个问题。如果您的 iOS 设备不断与Wi-Fi(Wi-Fi)断开连接，以下 12 个故障排除修复程序之一应该可以解决该问题。
1. 加入其他 Wi-Fi 网络
加入不同的网络有助于确定问题是出自您的设备还是路由器。将您的 iPhone 连接到不同的 Wi-Fi 网络并监控连接。
如果所有Wi-Fi网络都无法与您的 iPhone 保持连接，则您的手机设置或软件可能存在问题。但如果问题仅发生在特定网络上，则路由器负责Wi-Fi掉线。您的网络提供商也可能遇到停机时间。
跳转到第 #3、#4、#7、#8 和 #12 部分，了解针对Wi-Fi掉线问题的路由器特定故障排除修复。
2.启用自动加入
如果您的 iPhone 未配置为自动加入网络，iOS 可能偶尔会断开 Wi-Fi 连接。启用“自动加入”功能可以帮助您的 iPhone 保持与 Wi-Fi 网络的连接。
转到Settings > Wi-FiWi-Fi网络旁边的信息图标，然后打开自动加入(Auto-Join)。
3.调整路由器的位置
如果您的 iPhone 离无线路由器太远，它将无法保持与 Wi-Fi 的连接。只有当您的手机在路由器的信号范围内时，您才能享受稳定（且快速）的连接——越近越好。
如果网络路由器无法重新定位，请使用Wi-Fi 中继器或 Wi-Fi 扩展器(Wi-Fi repeater or Wi-Fi extender)以提高连接质量。
我们还应该提到路由器过热时会出现故障。在炎热的房间、靠近电子设备或通风格栅被堵塞时，您的路由器可能会过热。
将路由器移至远离干扰的凉爽或通风良好的房间。查看有关增强 Wi-Fi 信号的本教程以(tutorial on boosting Wi-Fi signals)获取更多提示。
4.检查路由器设置
如果您的 iPhone 在网络上受到限制，它可能会不断断开 Wi-Fi 连接。或者，如果网络上允许的同时连接数有限制。
如果您有权访问网络的管理面板，请确认您的 iPhone 不在被阻止或列入黑名单的设备列表中。您可以在网络管理面板的“ MAC 地址过滤(MAC Address Filtering)”或“设备管理”部分找到被阻止的设备。
如果您的设备(Whitelist your device)受到限制，请将其列入白名单，如果您无权访问管理面板，请联系网络管理员。断开空闲设备与网络的连接还可以释放带宽并提高连接质量。
5. 忘记并重新加入网络
如果 iPhone 以外的其他设备上的 Wi-Fi 连接稳定，则重新加入网络可能会解决问题。
- 转到Settings > Wi-Fi，然后点击网络名称旁边的信息图标。
- 点击忘记(Tap Forget)此网络(Network)，然后在确认提示中选择忘记。(Forget)等待(Wait)几秒钟，然后将您的 iPhone 重新连接到Wi-Fi网络。
6. 禁用 Wi-Fi 辅助
Wi-Fi Assist通过自动从(Assist)Wi-Fi切换到蜂窝数据来帮助 iPhone 用户保持与互联网的连接。仅当 iOS 怀疑您的Wi-Fi连接不佳时才会发生切换。这是一个很好的功能，但假设并不总是准确的。
假设歌曲无法通过Wi-Fi在(Wi-Fi)Apple Music中播放，或者Safari无法加载网页。Wi-Fi Assist（如果(Assist—if)启用）将尝试使用蜂窝数据播放歌曲。
如果您的 iPhone 不断与Wi-Fi(Wi-Fi)断开连接，即使网络有 Internet 连接，请禁用Wi-Fi 辅助。(Assist)或者，如果网络切换发生得太频繁。
打开设置(Settings)应用程序，选择蜂窝(Cellular)网络（或移动数据(Mobile Data)），向下滚动页面，然后关闭 Wi-Fi辅助(Assist)。
7.重启路由器
重启路由器是解决导致网络中断的临时系统故障的可靠方法。拔下路由器的电源适配器或取出电池（适用于电池供电的移动路由器）。您还可以从其 Web 或移动管理应用程序远程重启路由器。
如前所述，热路由器会影响连接速度和网络性能。如果路由器很热，我们建议先让它冷却几分钟，然后再重新打开。
8. 更新您的路由器固件
如果为您的路由器供电的固件存在漏洞或过时，您可能会偶尔遇到互联网速度和连接性下降的情况。安装适用于您的路由器的最新固件版本，并检查是否可以解决问题。
请参阅路由器的说明手册或制造商的网站，了解如何更新其固件。您还应该将路由器配置为自动下载和安装固件更新。
9. 重启你的 iPhone
(Shut)如果 iPhone 是唯一不断与Wi-Fi网络断开连接的设备，请(Wi-Fi)关闭并重新启动它。
按住 iPhone 的侧边(Side)按钮和提高音量或降低音量按钮。如果您的 iPhone 不支持面容 ID(Face ID)，请按住主(Home)屏幕按钮和任一音量键。更好(Better)的是，前往Settings > General，然后点击“关机”(Shut Down)。
然后将滑块向右拖动并等待大约一分钟，让您的 iPhone 完全关闭。
按住侧边(Side)按钮或电源(Power)按钮，直到看到Apple标志。解锁您的 iPhone 并再次加入Wi-Fi网络。如果问题仍然存在，请继续执行下一个故障排除步骤。
10. 更新你的 iPhone
Apple经常发布软件更新，以消除影响 iPhone 上 Wi-Fi 性能的错误。例如，iOS 14.0.1和iOS 15.1解决了阻止 iPhone 检测或连接到Wi-Fi网络的问题。
如果您很长时间没有更新您的 iPhone，您应该立即更新。运行过时或有故障的 iOS 版本可能是您的 iPhone 与Wi-Fi网络断开连接的原因。
前往Settings > General > Software Updates，然后点击“下载(Download)并安装(Install)”以安装最新版本的 iOS。
您需要Wi-Fi连接才能下载 iOS 更新。如果您的 iPhone 由于不断与Wi-Fi断开连接而无法更新，请改用(Wi-Fi)Mac安装更新。
解锁(Unlock)您的 iPhone，使用USB数据线将其插入Mac，然后打开Finder。在边栏上选择您的 iPhone，然后选择(Updates)检查(Check)更新。确保(Make)您的Mac电脑有互联网连接。
11.重置网络设置
无效的网络设置可能会导致iPhone 或 iPad 上的Wi-Fi 一直断开连接。(Wi-Fi to keep disconnecting all the time)将设备的网络设置恢复为出厂默认设置应该可以解决问题。
在 iOS 15 或更高版本中，前往Settings > General > Transfer或重置(Reset)iPhone ” > Reset” ，然后轻点“重置网络设置”(Reset Network Settings)。输入(Enter)您的 iPhone 密码，然后在确认提示中再次
选择重置网络设置。(Reset Network Settings)
对于运行 iOS 14 或更早版本的 iPhone，请前往Settings > General > Reset > Reset Network Settings。输入(Enter)您的 iPhone 密码，然后点击重置网络设置(Reset Network Settings)以继续。
请注意，执行网络重置也会重置您的手机、蓝牙(Bluetooth)和VPN设置。当你的 iPhone 重新开机时加入Wi-Fi网络，并检查它是否保持稳定的连接。
12. 出厂重置您的路由器
将路由器恢复为出厂设置是重置其密码和解决连接问题的绝佳方式。如果您的路由器有物理重置按钮，请按住该按钮，直到设备重新启动。这称为“硬重置(Hard Reset)”。
从其 Web 管理界面重置路由器称为“软重置”。您需要访问管理面板才能执行软重置。请参阅我们有关重置无线路由器的指南(guide on resetting a wireless router)或联系制造商以获取明确的说明。
Wi-Fi不断断开连接(Keeps Disconnecting)？获得外部支持(Get External Support)
请联系Apple 支持以检查您的 iPhone 是否有硬件损坏，尤其是在它与所有(Apple Support)Wi-Fi网络断开连接的情况下。iPhone 的Wi-Fi天线可能有故障。如果其他设备遇到类似问题，请联系您的互联网服务提供商。
iPhone Disconnecting From Wi-Fi? 12 Ways to Fix
Losing WiFi in the middle of an іmportant work call or online game contеst can be annoying. Fixing an iPhone that keeps disconnecting from Wi-Fi can bе both easy and сomplex, depending on the root cause of the iѕsue.
Putting your iPhone in and out of airplane mode might fix the problem. If your iOS device keeps disconnecting from Wi-Fi, one of the following 12 troubleshooting fixes should resolve the issue.
1. Join Other Wi-Fi Networks
Joining a different network can help determine whether the problem stems from your device or the router. Connect your iPhone to different Wi-Fi networks and monitor the connection.
If all Wi-Fi networks won’t stay connected to your iPhone, there’s likely a problem with your phone setting or software. But if the issue only occurs on a specific network, the router is responsible for the Wi-Fi drop. It’s also possible that your network provider is experiencing downtime.
Jump to sections #3, #4, #7, #8, and #12 for router-specific troubleshooting fixes for Wi-Fi drop issues.
2. Enable Auto-Join
iOS may occasionally drop a Wi-Fi connection if your iPhone isn’t configured to join the network automatically. Enabling the “Auto-Join” feature can help your iPhone stay connected to a Wi-Fi network.
Go to Settings > Wi-Fi, tap the info icon next to the affected Wi-Fi network, and toggle on Auto-Join.
3. Adjust Your Router’s Location
Your iPhone won’t stay connected to Wi-Fi if it’s too far from the wireless router. You’ll only enjoy a stable (and fast) connection if your phone is within the router’s signal reach—the closer, the better.
If the network router cannot be repositioned, use a Wi-Fi repeater or Wi-Fi extender to improve the connection quality.
We should also mention that routers malfunction when they overheat. Your router may overheat when used in a hot room, near electronic devices, or if its ventilation grills are blocked.
Relocate your router to a cool or properly ventilated room far away from interference. Check out this tutorial on boosting Wi-Fi signals for more tips.
4. Check the Router Settings
Your iPhone may keep dropping a Wi-Fi connection if it’s restricted on the network. Or, if there’s a limit to the number of simultaneous connections allowed on the network.
If you have access to the network’s admin panel, verify that your iPhone isn’t on the list of blocked or blacklisted devices. You’ll find blocked devices in the “MAC Address Filtering” or “Device Management” section of the network’s admin panel.
Whitelist your device if it’s restricted, or contact the network’s administrator if you don’t have access to the admin panel. Disconnecting idle devices from the network can also free up bandwidth and improve the connection quality.
5. Forget and Rejoin the Network
If the Wi-Fi connection is stable on other devices but your iPhone, rejoining the network may resolve the problem.
- Go to Settings > Wi-Fi and tap the info icon next to the network name.
- Tap Forget This Network and select Forget on the confirmation prompt. Wait for some seconds and reconnect your iPhone to the Wi-Fi network.
6. Disable Wi-Fi Assist
Wi-Fi Assist helps iPhone users stay connected to the internet by automatically switching from Wi-Fi to cellular data. The switch happens only when iOS suspects that your Wi-Fi connection is poor. It’s a nifty feature, but the assumption is not always accurate.
Say a song doesn’t play in Apple Music over Wi-Fi, or Safari doesn’t load a web page. Wi-Fi Assist—if enabled—will try to play the song using cellular data.
Disable Wi-Fi Assist if your iPhone keeps disconnecting from Wi-Fi even when the network has an internet connection. Or, if the network switch happens too frequently.
Open the Settings app, select Cellular (or Mobile Data), scroll down the page, and toggle off Wi-Fi Assist.
7. Restart the Router
Power-cycling your router is a surefire fix for temporary system glitches causing network drops. Unplug your router’s power adapter or remove its battery (for battery-powered mobile routers). You can also remotely reboot a router from its web or mobile admin app.
As mentioned earlier, a hot router can affect connection speed and network performance. If the router is hot, we recommend leaving it to cool for some minutes before turning it back on.
8. Update Your Router Firmware
You may experience occasional drops in internet speed and connectivity if the firmware powering your router is bug-ridden or outdated. Install the latest firmware version available for your router and check if that resolves the problem.
Refer to your router’s instruction manual or manufacturer’s website to learn how to update its firmware. You should also configure the router to download and install firmware updates automatically.
9. Reboot Your iPhone
Shut down and restart your iPhone if it’s the only device that keeps disconnecting from the Wi-Fi network.
Press and hold your iPhone’s Side button and either the Volume Up or Volume Down button. If your iPhone doesn’t support Face ID, press and hold the Home button and either of the Volume key. Better yet, head to Settings > General and tap Shut Down.
Then drag the slider to the right and wait for about a minute for your iPhone to shut down completely.
Hold the Side or Power button until you see the Apple logo. Unlock your iPhone and join the Wi-Fi network again. Proceed to the next troubleshooting step if the problem persists.
10. Update Your iPhone
Apple often releases software updates that squash bugs affecting Wi-Fi performance on iPhones. For instance, iOS 14.0.1 and iOS 15.1 address issues preventing iPhone from detecting or connecting to Wi-Fi networks.
If you haven’t updated your iPhone in a long time, you should do so immediately. Running an outdated or buggy iOS version could be why your iPhone disconnects from Wi-Fi networks.
Go to Settings > General > Software Updates and tap Download and Install to install the latest version of iOS.
You need a Wi-Fi connection to download iOS updates. If you can’t update your iPhone because it keeps disconnecting from Wi-Fi, install the update using a Mac instead.
Unlock your iPhone, plug it into your Mac using a USB cable, and open Finder. Select your iPhone on the sidebar and select Check for Updates. Make sure your Mac computer has an internet connection.
11. Reset Network Settings
Invalid network settings may cause Wi-Fi to keep disconnecting all the time on your iPhone or iPad. Restoring your device’s network settings to factory default should fix the problem.
In iOS 15 or newer, go to Settings > General > Transfer or Reset iPhone > Reset and tap Reset Network Settings. Enter your iPhone’s passcode and select Reset Network Settings again on the confirmation prompt.
For iPhones running iOS 14 or older, go to Settings > General > Reset > Reset Network Settings. Enter your iPhone’s passcode and tap Reset Network Settings to proceed.
Note that performing a network reset will also reset your cellular, Bluetooth, and VPN settings. Join the Wi-Fi network when your iPhone comes back on and check if it maintains a stable connection.
12. Factory Reset Your Router
Restoring your router to factory settings is an excellent way to reset its password and fix connectivity issues. If your router has a physical reset button, press the button until the device restarts. That’s called a “Hard Reset.”
Resetting a router from its web admin interface is known as a “Soft Reset.” You’ll need access to the admin panel to perform a soft reset. Refer to our guide on resetting a wireless router or contact the manufacturer for clear-cut instructions.
Wi-Fi Keeps Disconnecting? Get External Support
Contact Apple Support to examine your iPhone for hardware damage, especially if it disconnects from all Wi-Fi networks. Your iPhone’s Wi-Fi antenna may be faulty. Reach out to your internet service provider if other devices are experiencing similar issues.
