I recently replaced the battery and USB in the S7 under warranty. Unfortunately, I also had the volume button pressed permanently, probably by some impact. I don't know, but it was there. They replaced the battery and USB under warranty, but I had to pay for the button frame or they couldn't take care of the battery. When asked if the battery and the USB port could not be replaced, I was told that they are an authorized salon and they must return the phone to me as new, so there cannot be any fault, even if I agree to it. At the beginning I thanked and stated that I would withstand the exchange of phones, but then I came to the conclusion that I would not buy a new S7 for PLN 480 (this was the cost of the frame with the replacement), so you can say that a few months before signing a new contract with the operator, and along with the purchase of a new phone, I bought a brand new SGS7 for less than PLN 500.