Iphone 5s overheating and battery drain issue
My battery started to drain so fast. For like 1-2 hours of use. I changed the battery, but the problem was not fixed. It is getting to 102,2 ℉. I even restored my iphone twice. I even updated it to the last IOS, since I hadn't did it for more than a year. But there is no change.. The phone is still overheating and the battery is draining even when I don't use the it. Could you give me some advice what should I do ?
iPhone 5s, iOS 10.3.2