1. Go to the home page of iPhone and tap Settings.
2. Click General in Settings.
3. General Interface Click below to restore.
4. Restore Options Select Restore network Settings.
5. Enter your screen lock password.
6, Enter the restore network confirmation screen, click Restore network Settings.
7. After the restoration is complete, click to restart the iPhone.
8, restart and click Settings to open the wireless LAN.
9, enter the normal reconnect wifi, together to restore normal.
1. Find the \"Settings\" app on your phone and open it.
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2. Enter the Settings, click \"All Settings\" ----> Find \"WLAN\" and click on it to go to WLAN Settings.
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3. After entering the WLAN, click the icon for more options in the lower right corner. Click \"Advanced\" from the options that pop up.
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4. Swipe the screen, find \"Access Point Priority Settings\