The mobile has no issues and is all okay. The phone turned off once, and after taking it to the shop, the shopkeeper thought it was a battery issue, so he opened it. After checking thoroughly, he realized it just needed a software update on the computer; that is the only reason it was opened. Nothing else has been changed. If you feel there is an issue, please do not buy it. For security, you will take a photocopy or photo of my NID card.