The charging port tends to come unattached from the phone and needs to be fixed also my new phone the tips that you plug in some are smaller size so when you plug it in it won't charge but some have a tight fit which it means its a bet bigger and it fixed the problem you need to find the right charger even though there all the same type the may look the same but some are a tiny bit bigger which makes the perfect fit because the charging port tends to move around while charging it.
Sorry if I made any spelling mistakes.
-Ace