The signal and wireless of Maimang 9 are particularly poor. It's no use taking off your mobile phone case and restarting it. what can I do? (p20 signal and wireless are good at the same time)

The signal display of mobile phone card has a strong correlation with the network environment. If the number of signal bars in the status bar of your mobile phone is more or less, I suggest you take the following measures to try to solve it:

1, please avoid using magnetic/metal protective shell, magnetic bracket or magnetic sucker. If your mobile phone uses a metal protective case, a magnetic protective case, a magnetic bracket or a magnetic sucker, I suggest you take it off and try it. Metal and magnetic materials easily interfere with signals, resulting in poor cell phone signals.

2. Please confirm whether the SIM card is disabled. Please search in the settings, enter the SIM card management, and ensure that the SIM card switch is turned on. Disabling the SIM card will cause the signal bar to display no signal (when a single card is inserted) or only one card signal (when a dual card is inserted).

3. Please troubleshoot the mobile phone card.

It is recommended that you install other SIM cards of the same operator into your mobile phone for viewing. If the signal is normal, there may be something wrong with your mobile phone card. I suggest you go to the operator's business hall to replace a new mobile phone card.

(1) If your mobile phone card is cut manually, it may affect signal reading due to irregular shape and poor contact. It is recommended that you bring your personal ID card to the operator's business hall to apply for a standard mobile phone card.

(2) The dirty or oxidized mobile phone card will also affect the reading of signals. I suggest you keep your mobile phone card clean.

4. Please eliminate the network reasons.

(1) Please try to change the current location.

In some closed indoor environments, such as densely spaced buildings, the cell phone signal may be blocked, resulting in poor signal.

The network coverage of operators varies from region to region, and some regions may have insufficient coverage capacity, resulting in poor cell phone signal.

If the signal of your mobile phone is poor in a specific area, or the signal of the mobile phone of the same operator's calling card used by friends around you is also poor, it may be caused by the poor network quality in your local area, and you can return to normal if you switch to other places.

(2) Please try to reset APN.

(3) Please try to restore the network settings.

(4) Please restart your phone or try switching flight modes.

Please update your mobile phone system to the latest version and try again.

It is recommended that you update the mobile phone system version in time.

Still unable to solve

If the above investigation can't solve your problem, I suggest you contact Huawei's customer service hotline (950800) for more help, or back up your data in advance (third-party applications such as QQ and WeChat need to be backed up separately), and bring relevant purchase vouchers to the nearby Huawei customer service center for testing.