My Huawei Nova 5T has recently fallen into water, I couldn't switch on the phone at the beginning, but after a few days it worked again.
I just can't turn on the Wi-Fi, if I try to turn on the Wi-Fi it will be turned off again immediately.
Well then your OS seems to notice that something is wrong with the WLAN chip. Scrap metal. You can throw it away. Resetting probably doesn't do anything anymore, but it's worth a try.
Perhaps you should temporarily remove the network and configure it again. To do this, go to "Settings" and "WLAN" in the Android settings. If you tap on the relevant network, the option "Remove" is available.
If that didn't work, you should reset all network settings. All WLAN passwords are removed! The appropriate option can be found in the Android settings under "General", "Reset" and "Reset network settings".
