How to fix my lock button on my iphone after being dropped in toilet?

Today at school I dropped my phone in the toilet. I took I really quickly and wiped it with a paper towel. I seemed like it was fine. A couple hours later when I got home my lock button on my phone stopped working and I coudnt look my phone. I've put I in rice for 5 hours and it still doesn't work.

Take it to a phone shop and get it properly dismantled, cleaned & dried.

The rice idea is an urban myth.
It actually takes weeks for a phone with the casing on to dry out properly if any amount of water has go in, but permanent damage happens in anything from minutes to hours, depending on how much water there's & where it is.

As long as the battery is connected the damage will continue to get worse.

[Electronics designer & programmer for 40 years].

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