So I forgot to take my phone out of the bathroom and now its exposed to steam

At first there was no concerning issue other than its speaker volume being greatly diminished however after playing with it around an hour later, a very noticeable amount of lag was spotted especially when going into the multitasking screen, so I went deeper and started experimenting with more different apps. The lag is most prominent when I opened Settings, every button icon I clicked in the settings menu I noticed a very long delay ( 1 - 2 second ).

Front / Rear facing camera is OK
Speaker is now OK
Physical buttons all OK
Headphone Jack not so OK ( there are some static disruption )

The phone also gets noticeable hotter when under medium ( media streaming / opening apps ( album / music / chrome ) ) and heavy load ( gaming / camera ). Charging seems slower, or that could have been me, and the battery life is now a nightmare compared to the day before that incident happened ( usual : 9 - 15 hours ( constant use - no screen of time / now : 4 - 7 hours ( same usage ).

Has anyone else gone through the same thing with their phone?
Any other solutions other than sending it to a service center?
Will this invalidate my Warranty ( LDI is still white )?

Sorry if my post doesn't follow the usual guidelines for XDA threads.
ヾ(_ _*) First time poster, Yoroshiku Onegaishimasu.