Xiaomi 1 1 signal is unstable.

If you encounter bad cell phone signal or no service, I suggest you:

1. Please choose the network type setting reasonably according to the operator;

2. Change the environment and eliminate indoor and outdoor interference;

3. Check whether the mobile phones around the same operator's network also have signal difference, and judge whether it is the operator's signal problem;

4. At present, many metal protective cases will also play a shielding role for mobile phone signals, which will affect the mobile phone signals. If you use a metal protective shell, I suggest you remove the protective shell and see the signal situation;

5. Upgrade to the latest version of MIUI system;

6. Back up the mobile phone data and restore the factory settings;

7. If the above operations are ineffective, it is recommended that you conduct after-sales inspection.