1. Please confirm whether a metal protective cover is used. The metal protective cover will affect the antenna of the mobile phone, resulting in poor signal of the mobile phone. It is recommended that you use a plastic or leather case. Please try not to touch the WLAN antenna position (the top of the mobile phone) with your hands, which will cause great interference to the signal.

2. If your mobile phone is far away from the WLAN router or behind the partition wall, the signal strength will be weakened, resulting in lower network speed or poor signal. Please connect to the WLAN near the router.

3. If multiple devices are connected to the same router, please check whether other devices are connected normally. If the speed of other devices is normal, it is recommended to disconnect other devices and check whether the mobile phone is connected normally. If other devices are connected and the signal difference is slow, it is recommended to try another router.

4. Please restart the router to try to recover.

5. Please check whether there are other devices using big data at the same time, such as watching TV with a TV box and downloading movies with a notebook. If you have any suggestions, allocate network resources reasonably.

6. Low router power or router compatibility problems lead to poor signal or slow network speed. It is recommended to try new hotspots.

7. After removing the above reasons, the signal is still poor or the network speed is very slow. Please try to update the system to the latest version after backing up the data. If it cannot be solved, please try to restore the factory settings after backing up the data.

After the above attempts, it still cannot be solved. Please back up the data and bring the purchase invoice to Huawei's after-sales outlets for inspection and maintenance.