Sometimes the problem could be caused by the GPS running app that you are using. Go to Settings> Privacy & Security>Turn Location Services off then on. This would clear the bugs that may have been interrupting your GPS connection. If location service is turned on and your GPS stops working properly, you can simply just turn off your location services and reactivate it. Sometimes after you update the software or for other unknown reasons, location services could be turned off without your awareness. Sometimes the problems could be smaller than it seems to be! Your location services may be turned off.

In this case, you should check the GPS while keeping changing your location. This applys to those who come to a new place and suddenly cannot use GPS.

If you are in a place or building where radio signals are weak or cannot reach, you may eventually face problems like your GPS on iPhone not working or poor call connectivity. It plays a major role in determining your exact location. Fix iPhone GPS Not Working without Data Loss

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