As-salamu alaykum! Pixel 7 is a completely fresh phone, RAM and ROM 8/128 GB. There are no problems, you can check it for as long as you want. Only the display has been changed, a very high-quality display is installed. You can check it for as long as you want, there is not even the slightest problem. As security with the phone, a photocopy of the NID Card and the phone cable will be given.