1. The mobile phone protection case affects the Wifi signal
Most mobile phone users will be equipped with a protective case for their own suffering, but some third-party protective cases, especially metal protective cases or metal frame cases, will affect the Wifi signal. If the mobile phone Wifi signal is not good, may wish to take off the protective case to try to see if it is better.
2. Restore network Settings
Wifi signal is not good may also be the mobile phone's system has some problems, you can restore the network Settings to solve some problems. Go to Settings - General-Restore - Restore Network Settings to restore the network. This restore does not reset other data, except that some wireless passwords stored on the phone need to be filled in again. After the system is restored and restarted, try connecting to the wireless network to see if the signal strength improves.
3. Upgrade the latest system
Firmware updates often include fixes for bugs, bugs, and sometimes enhancements to this part of the network. If the Wifi signal is not good, and stay in the older version, may wish to upgrade to the latest system to try