Great App if you want to see what your phone is doing – GPS Diagnostic: Satellite Test Review

I bought this out of curiosity and I’m very happy with it. Gives you a ton of information about what your phone is actually doing. Great support when I tried using my new iPhone X to map my progress on a commercial flight (no, apparently new iPhones won’t do it any more)
Review by Carguy07840 on GPS Diagnostic: Satellite Test.