Replace the battery or have a place do it for you.
We had a very successful battery replacement done on my wife's iPhone 6s a while back for a very reasonable price but also comes with a pretty **** good guarantee. Check their website and see if they have one in your area or something similar.
Check out their site here for more information >:
Dr. Phone Fix provides iPhone, Samsung Phone & Computer Repair in Saanich, Victoria. Find solutions to your computer, laptop, & mobile problems on the same day.
www.docphonefix.com
If the battery voltage is lower the normal, that could cause excessive heat and as the voltage drops the amperage goes up normally and amperage equals heat, so a good replacement battery May fix both your problems.
If it's still works for you normally, a battery replacement is a pretty cheap fix to keep on going for another few years and 10 plus years was a pretty good run for it if it was used even normally.
- Patrick
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