My iPhone 6 plus … there is a problem in gps while using google maps or any others programs … i mean my location is not stable , it is jumping from one point to another and not precise…

This could depend on where you are. Sometimes in big cities, where there are big sky scrappers, the signal will bounce around because of the tall buildings. If you are in an urban country, then it might be because the towers are far and few between. So it's having trouble fully connecting.

If you try connecting to wifi, it should help stabilize your location.