How to fix WiFi on Xiaomi Redmi 4

If you stuck with not working WiFi connection on your recently bought Redmi 4 phone, here’s a method you might want to try.

Solution for not working WiFi on Xiaomi Redmi 4

1. Get full root access and system partition writing permissions.
2. Check for these files “/persist/WCNSS_qcom_wlan_nv.bin” and “/persist/WCNSS_wlan_dictionary.dat”, if your don’t have these than download from here and copy them.
3. Set “644” permissions on both of these files.
4. Reboot into system and check if WiFi is successfully turning on and working.
5. If you still can’t get WiFi working on your Redmi 4 device, then check the file group and the owner of “/data/misc/wifi/wpa_supplicant.conf”, it should be “wifi:wifi”. If not, then use command prompt to change it:

   chown wifi:wifi /data/misc/wifi/wpa_supplicant.conf

6. Reboot and check WiFi again.
7. If this still doesn’t help, then check “logcat” and “dmesg | grep wlan” for any possible errors.