Solution to WiFi connection failure of Android

 

 

In recent tests, mobile phones often fail to connect to wifi, and "Restore factory settings" cannot connect to wifi. after endless searches and flashing, there is still no solution, later, I finally found the third solution to solve my problem (please be careful if this method is not found online). The following lists the three methods I found and I found for your use.

Solution 1: refresh the kernel or radio.
Solution 2: Use r.e. to delete all files in the data/MISC/DHCP folder.
Solution 3: Use R. E. To delete the wpa_supplicant.conf file in the data/MISC/WiFi folder.
Before performing the preceding operations, you are advised to back up related files and personal data.