Galaxy S9 deep check up

My three weeks old Galaxy S9 yesterday accidentally fell down the stairs of my house. I'm really worried about internal damages on the motherboard like fine cracks on the BGA as I read around and also in this forum.Everything seems to work fine but the idea of having a working but potentially damaged phone really bothers me. Especially since the phone is practically new.Is there an app or something (a Pc software) I can deeply check up my phone hardware and be sure there isn't (I hope!) any damage?? Obviously I would rather doing it without take the phone to a care center. Thanks in advance.

EDIT: Is there something to check the display as well?