iPhone 5S - Dropping Wi-Fi and rebooting sometimes

[Cod3rror]

The phone is not mine, so I'm not sure exactly what happened, but I do know that it was dropped into water once and it was fixed.

I was told it started restarting and constantly dropping the Wi-Fi signal after the update apparently.

The battery is really bad, and it does not last too long. So I am wondering if it has something to do with that? Because if it was actually damaged then Wi-Fi would not work at all, rather working intermittently.

Anybody got any ideas, please?

 

[JPack]

If it wasn’t cleaned and repaired properly after water exposure, corrosion is probably starting to kill the phone.

 

[AxlTJ]

That phone needs to be totally cleaned up with some parts, like the battery, replaced as necessary. Any problem is most likely a result of that event. A total clean up and repair can most likely resolve any issue at all.

 

[Cod3rror]

Thank you for the replies.

I turned off Bluetooth and everything started to work. I think it's the update that messed things up.