SGS2 Overheating and battery problems

[Eeglis]

My little sister has been using SGS2 (GT-I9100) For about 1,5 years now after I got myself an S5 so the phone is couple years old. Yesterday the phone started holding battery very poorly. I tried another batterry, factory resetting and dusting internals, no change. The phone seems to overheat at the left edge the most. Any tips?
That drop from 50% to 2% was when I dusted the internals, so the booting up took 48% of battery.
 

[Sir Asvald]

My little sister has been using SGS2 (GT-I9100) For about 1,5 years now after I got myself an S5 so the phone is couple years old. Yesterday the phone started holding battery very poorly. I tried another batterry, factory resetting and dusting internals, no change. The phone seems to overheat at the left edge the most. Any tips?

That drop from 50% to 2% was when I dusted the internals, so the booting up took 48% of battery.

 

It would seem that the battery is messing up. Change the battery.

[Eeglis]

It would seem that the battery is messing up. Change the battery.

Tried that, doesn't help.

[Sir Asvald]

Tried that, doesn't help.

Hmmm. Very odd, Try a different charger. 

[PillowSmoke]

It might be time to switch out the battery, you can buy one on amazon for quite cheap actually.

[Eeglis]

Hmmm. Very odd, Try a different charger. 

Tried with different batteries with 4 different chargers, no use.

[Sir Asvald]

Tried with different batteries with 4 different chargers, no use.

I think it's time to throw it out. If it's acting up. Get a new one.

[Eeglis]

I think it's time to throw it out. If it's acting up. Get a new one.

Aw, O suppose that's one way to look at it. I'll try to mess something with the phone's internals. Maybe I'll find something that'd save the phone.

[Sir Asvald]

Aw, O suppose that's one way to look at it. I'll try to mess something with the phone's internals. Maybe I'll find something that'd save the phone.

You can try to take it to a phone repair shop. See how much it'll cost.