Yesterday my iPhone XS dropped on the street. It was in a case and had a glass screen protector that took a hit. The phone it self does not have any visible damage.
Since then the GPS, WIFI and cellular reception is/feels bad. It works but it not as good as before. Most notable was the GPS: While driving it was always severeal meters behind or the blue dot was placed next to the street in the field. With wifi and cellullar it is a little bit harder to graps because how looks at the reception when everything works :) but I pretty sure I had full wifi connection in the bathroom that is 3 meters from the wifi router.
I did not open it or anything. I did restart it and despite the bad reception everything seems to be working fine.
So I have two questions:
* Is there a way to check the reception with an app or something? I know that Apple can do hardware analysis in the store so I could go there and try to get them to check it for me.
* Does someone already have a idea what is broken and how it could be fixed?