在 Android 中修复与网络相关的问题(network-related issues in Android)可能非常棘手，但当您知道要采取正确的故障排除步骤时，情况并非如此。在本教程中，我们将重点介绍 11 种可能的修复方法，以在您的Android手机未连接到Wi-Fi时进行尝试。
1. 重新启用设备的 Wi-Fi
如果您的手机未检测到网络，或者连接断断续续(connection keeps dropping intermittently)，禁用并重新启用Wi-Fi（在您的手机上）可能会解决问题。
从通知面板(Notification Panel)或设置(Settings)菜单（设置(Settings)>网络和互联网(Network & internet)> Wi-Fi >使用 Wi-Fi(Use Wi-Fi) ）关闭手机的 Wi-Fi ，等待几秒钟，然后重新打开。
返回 Wi-Fi 设置菜单并尝试重新加入网络。
2.缩短连接距离
如果您的Android手机超出路由器的连接范围，或者网络强度较弱，则您的Android手机将无法连接到 Wi-Fi 网络。(Android)将手机移近路由器（反之亦然），然后再次尝试加入网络。
确保(Make)您的手机与路由器有清晰的视线。同样(Likewise)，移除所有可能干扰和阻挡Wi-Fi信号的电器、设备和物体。您还需要确认路由器工作正常。检查状态指示灯并确保正确连接天线/电缆。
如果您无法调整设备或路由器的位置，请使用Wi-Fi 扩展器(Wi-Fi extender)或 Wi-Fi 中继器来提高网络的可见性和强度。(boost the network’s visibility & strength)
3. 确认网络的登录凭证(Login Credentials)
当然，您不能使用不正确的登录凭据加入受密码保护的网络。如果您的Android手机无法连接到Wi-Fi，请检查网络的管理面板并确认您的密码正确。
密码区分大小写，因此请确保相应地键入小写和大写字母。如果您的设备在输入正确密码后仍无法加入网络，请联系网络管理员。
4. 检查Mac 地址限制(Mac Address Restrictions)
网络管理员使用MAC 地址过滤(MAC address filtering)来阻止设备加入 Wi-Fi 网络。通过限制网络上的设备数量，利用相同的技术来提高网络质量和连接速度。
如果您的Android手机无法加入无线网络，请检查网络的管理面板并删除分配给您设备 MAC 地址的任何限制(remove any restrictions assigned to your device’s MAC address)。
还有一件事：如果路由器连接的设备过多，您的手机可能无法加入网络。如果可以，请断开某些设备与Wi-Fi网络的连接，然后尝试（重新）连接您的手机。
5.启用和禁用飞行模式
飞行模式(Airplane mode)可刷新智能手机的网络功能（蜂窝数据、蓝牙(Bluetooth)、Wi-Fi、GPS等）。让手机进入和退出飞行模式是解决网络相关问题的一种简单方法。
打开手机的通知面板(Notification Panel)，点击飞机图标(airplane icon)，等待 10 秒，然后再次点击飞机图标(airplane icon)。
您还可以从Android设置菜单启用和禁用飞行模式。
转到设置(Settings)>网络和互联网(Network & internet)>高级并打开飞行模式(Aeroplane mode)（或飞行模式(Airplane mode)或飞行模式(Flight mode)）。
等待(Wait)10 秒钟，然后重新打开该选项。如果您的Android手机仍未连接到Wi-Fi网络，请(Wi-Fi)忘记(Forget)并重新加入网络。
6.忘记Wi-Fi网络
这将从您的设备内存中删除Wi-Fi网络及其配置。如果您在连接到特定网络时遇到困难，您应该这样做。
- 转到设置(Settings)>网络和互联网(Network & internet)，然后选择Wi-Fi。
快速提示：(Quick Tip:) 点击并按住(Tap)通知面板(Notification Panel)中的 Wi-Fi 图标可快速访问设备的 Wi-Fi 设置菜单。
- 选择已保存的网络(Saved networks)。
- 选择您的手机拒绝加入的Wi-Fi网络，然后点击(Wi-Fi)忘记(Forget)。
这将立即从您的手机中删除网络。返回 Wi-Fi 设置菜单并重新加入网络。
7.重启你的手机
在重启手机之前，请检查其他设备是否可以加入Wi-Fi网络。您还应该尝试将手机连接到不同的网络。这将有助于确定问题的根源。如果其他设备连接到网络没有任何问题，请重新启动手机。
按住手机上的电源按钮(power button)或锁定按钮(lock button)，然后在电源菜单中选择重新启动。(Restart)
如果您的手机连接到其他 Wi-Fi 网络没有任何问题，请重新启动路由器。
8.刷新你的路由器
如果路由器过热或长时间在高温下运行，路由器有时会出现故障。如果您可以访问路由器，请检查其通风格栅是否靠近墙壁或被灰尘和其他材料阻挡。
重新启动路由器可以帮助冷却它并解决与网络相关的问题。从电源上拔下路由器，一两分钟后重新插入，然后重新打开。如果您使用的是移动路由器或电池供电的路由器，请取出并重新插入电池，几秒钟后打开路由器电源。
对于带有不可拆卸电池的路由器，按住电源按钮直到状态指示灯熄灭。如果路由器继续过热，请将路由器移至凉爽的房间或通风良好的位置。
9.重置网络设置
重置手机的网络设置将从您的设备中删除所有以前保存的Wi-Fi网络、蜂窝首选项、VPN配置、蓝牙(Bluetooth)设备和其他与网络相关的设置。
这意味着您必须为所有受保护的 Wi-Fi(Wi-Fi)网络重新输入密码。这听起来像是很多工作，但事实并非如此。此外，该操作还可以解决您的Android手机无法连接到Wi-Fi 的(Wi-Fi)问题。
- 转到设置(Settings)>系统(System)>高级(Advanced)，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)。
- 选择重置设置(Reset Settings)，输入手机密码、图案或PIN，然后选择重置设置(Reset Settings)以开始网络重置过程。
然后，前往设置(Settings)>网络和 Internet(Network & Internet) > Wi-Fi，选择网络，输入密码，然后尝试再次连接到网络。如果问题仍然存在，请继续执行下一个故障排除步骤。
10.更新你的手机
有缺陷的Android系统更新可能会破坏手机的 Wi-Fi 功能。过时的操作系统也会如此。前往(Head)您设备的设置并安装任何可用或待处理的更新。
打开设置(Settings)应用程序，选择系统(System)，选择高级(Advanced)，选择系统更新(System update)，然后点击检查更新(Check for updates)按钮。
如果您在安装最近/新的Android更新后无法连接到任何Wi-Fi网络，则更新可能存在问题。降级手机的 Android 操作系统版本(Downgrade your phone’s Android OS version)并检查是否可以解决问题。
11.重置路由器
当您的Android(Android)手机无法连接到Wi-Fi时，可以解决的另一件事是在路由器上执行出厂重置。请注意，重置路由器也会更改网络密码。因此，请确保在恢复出厂设置后加入网络时输入出厂默认密码。
请参阅路由器的说明手册或通过我们的路由器重置教程(router reset tutorial)了解详细说明。
检查硬件损坏
如果您的手机和其他设备无法连接到网络，则可能是路由器出现问题。访问附近的硬件维修店或联系路由器制造商寻求支持。
Android Phone Not Connecting to Wi-Fi? 11 Ways to Fix
Fixing network-related issues in Android can be quite tricky, but not when you know the right troubleshooting steps to take. In this tutorial, we highlight 11 potential fixes to try if your Android phone is not connecting to Wi-Fi.
1. Re-Enable Your Device’s Wi-Fi
If your phone doesn’t detect the network, or the connection keeps dropping intermittently, disabling and re-enabling Wi-Fi (on your phone) might resolve the problem.
Turn off your phone’s Wi-Fi from the Notification Panel or Settings menu (Settings > Network & internet > Wi-Fi > Use Wi-Fi), wait for some seconds, and turn it back on.
Return to the Wi-Fi settings menu and try rejoining the network.
2. Shorten the Connection Distance
Your Android phone won’t connect to a Wi-Fi network if it’s out of the router’s connection range, or if the network’s strength is weak. Move your phone closer to the router (or vice versa) and try joining the network again.
Make sure your phone has a clear line of sight from the router. Likewise, remove all appliances, devices, and objects that could interfere and block the Wi-Fi signal. You also need to confirm that the router is working correctly. Check the status lights and ensure the antennas/cables are properly attached.
Use a Wi-Fi extender or Wi-Fi repeater to boost the network’s visibility & strength if you can’t adjust your device or router’s position.
3. Confirm the Network’s Login Credentials
Of course, you can’t join a password-protected network with incorrect login credentials. If your Android phone won’t connect to Wi-Fi, check the network’s admin panel and confirm that you have the correct password.
Passwords are case-sensitive, so make sure you type lowercase and uppercase alphabets accordingly. Contact the network administrator if your device still won’t join the network after entering the correct password.
4. Check for Mac Address Restrictions
Network administrators use MAC address filtering to block devices from joining a Wi-Fi network. The same technology is utilized to improve network quality and connection speed by limiting the number of devices on a network.
If your Android phone won’t join a wireless network, check the network’s admin panel and remove any restrictions assigned to your device’s MAC address.
One more thing: your phone may fail to join a network if there are too many devices connected to the router. If you can, disconnect some devices from the Wi-Fi network and try (re)connecting your phone.
5. Enable and Disable Airplane Mode
Airplane mode refreshes your smartphone’s network functionalities (cellular data, Bluetooth, Wi-Fi, GPS, etc). Putting your phone in and out of airplane mode is an easy way to fix network-related issues.
Open your phone’s Notification Panel, tap the airplane icon, wait for 10 seconds, and tap the airplane icon again.
You can also enable and disable airplane mode from the Android settings menu.
Go to Settings > Network & internet > Advanced and toggle on Aeroplane mode (or Airplane mode or Flight mode).
Wait for 10 seconds and toggle the option back on. Forget and rejoin the network if your Android phone is still not connecting to the Wi-Fi network.
6. Forget the Wi-Fi Network
This will remove the Wi-Fi network and its configurations from your device’s memory. You should do this if you’re having difficulties connecting to a specific network.
- Go to Settings > Network & internet and select Wi-Fi.
Quick Tip: Tap and hold the Wi-Fi icon in the Notification Panel to quickly access your device’s Wi-Fi settings menu.
- Select Saved networks.
- Select the Wi-Fi network your phone refuses to join and tap Forget.
That’ll immediately remove the network from your phone. Return to the Wi-Fi settings menu and rejoin the network.
7. Restart Your Phone
Before restarting your phone, check if other devices can join the Wi-Fi network. You should also try connecting your phone to a different network. That’ll help determine the source of the problem. Restart your phone if other devices connect to the network without any issue.
Press and hold the power button or lock button on your phone and select Restart in the power menu.
If your phone connects to other Wi-Fi networks without any hiccup, restart the router instead.
8. Refresh Your Router
Routers sometimes malfunction if they overheat or operate in high temperatures for a long period. If you can access the router, check that its ventilation grill isn’t close to a wall or blocked by dust and other materials.
Restarting your router can help cool it down and fix network-related issues. Unplug the router from power, plug it back in after a minute or two and turn it back on. If you’re using a mobile or battery-powered router, remove and reinsert the battery, and power on the router after some seconds.
For routers with non-removable batteries, press and hold the power button until the status light goes off. Relocate the router to a cool room or location with proper ventilation if it continues to overheat.
9. Reset Network Settings
Resetting your phone’s network settings will delete all previously-saved Wi-Fi networks, cellular preferences, VPN configurations, Bluetooth devices, and other network-related settings from your device.
This means you’ll have to re-enter the password for all protected Wi-Fi networks. This might sound like a lot of work, but it isn’t. Plus, the operation can resolve problems stopping your Android phone from connecting to Wi-Fi.
- Go to Settings > System > Advanced and select Reset options.
- Select Reset Wi-FI, mobile & Bluetooth.
- Select Reset Settings, enter your phone’s password, pattern, or PIN, and select Reset Settings to commence the network reset process.
Afterward, head to Settings > Network & Internet > Wi-Fi, select the network, enter its password, and try connecting to the network again. Proceed to the next troubleshooting step if the problem persists.
10. Update Your Phone
A buggy Android system update can destabilize your phone’s Wi-Fi functionality. So will an outdated operating system. Head to your device’s settings and install any available or pending updates.
Open the Settings app, select System, select Advanced, select System update, and tap the Check for updates button.
If you can’t connect to any Wi-Fi network after installing a recent/new Android update, there’s likely a problem with the update. Downgrade your phone’s Android OS version and check if that fixes the problem.
11. Reset the Router
Another thing that can fix when your Android phone will not connect to Wi-Fi is performing a factory reset on the router. Note that resetting your router will also change the network password. So, make sure you enter the factory default password when joining the network after a factory reset.
Refer to the router’s instruction manual or go through our router reset tutorial for detailed instructions.
Check for Hardware Damage
There could be a problem with the router if your phone and other devices can’t connect to the network. Visit a nearby hardware repair store or contact your router’s manufacturer for support.
