home button ring is raised from top

hey guys I have bought a 7 plus yesterday and what I have noticed is that the ring on the home button is a little bit raised or sticking out on top and perfectly aligned on other sides, it works fine though the touch, the taptic engine. I have a 7 also but it is fine, also the sim tray is not original it doesn’t have a seal on it. the main concern is TOUCH ID. Should i return the phone and get other one or is it okay and I continue using it. will it get damaged or failed?

its so much minor that I could only feel it by swiping my finger over it and by looking very closely to surface I can see it a bit raised on top …

Please describe the best solution

Thanks in Advance!