Fake Iphone 13 mini?

Hello everyone, ive bought this iphone 13 mini from an swiss refurbishing service which is trusty. However i noticed an touch id kinda button and around the lens of the front camera is a weird ring looking like glue idk. And the display is lifted in the top left corner. Most surprised tho, i was about the touch id sensor because i thought no iphone 13 had the sensor installed... when i entered the serial number on the apple support site, it found out that it was for an 13 mini but no date of sale was found... thank you already now...