2. The mobile phone network setting is incorrect, so you can use another access point to surf the Internet. Compared with CMNET, you can use CMWAP access point to surf the Internet.
3. The network settings of the mobile phone's own system are a bit confusing, resulting in poor signal when connecting to the wireless. At this time, you can try to turn on and off the flight mode and see if you can solve the problem. Running too many programs on the mobile phone will also affect the signal problem. Try to clean the phone.
4. Server problems usually manifest as server crash or shutdown, which rarely happens and can be solved by calling the network service provider.
5. Determine whether there is a problem with the mobile phone software. Solution: Replace the software to restore the factory settings or brush the machine.