As per your concern, we would request you kindly visit the service centre and inspect your device with the technical team end, they will provide you with all the information in a better way after inspecting the device physically.
Its normal on Samsung i repaired many times. If the issue again comes. Check the battery it was bulges. So change battery will solve. The adhesive of Samsung also wearoff so ask them to check battery small minor bulge they cant see at first look so ask them too inspection properly. Because three time service people changed adhesive only 600ruppes again and again back peel off. Only one knowledge technician found the battery is minor bulge thats the reason and changed battery now everything fine
