Tool: iPhone 8
Operating system: iOS 14.4. 1.
Operating Software: Settings
1. Go to the iPhone home page and click Settings.
2. Click General to enter the setting interface.
3. Click Restore in the common interface.
4. Click Restore Network Settings in the Restore interface.
5. Enter your screen lock password.
6. The chef confirms for the second time and clicks Restore Network Settings.
7. Click to restart your iPhone, and then you can connect to the network normally.