this is clearly a software problem. For me, it started after I upgraded to iOS 9. GPS stopped working on BOTH my iPhone and my Ipad. Waze could not find GPS satellites, Apple maps and Google maps were inaccurate and jumped around (I'd be driving on the highway, and the maps would place me on a side road), Uber had my wrong location (twice I was charged by drivers who claimed I wasn't where I was supposed to be). I tried absolutely everything posted on these forums: soft reset, hard reset, toggle Location Services on/off, switch off LTE, etc. I even did a complete data wipe, set up as a new phone, re-installed iOS, and same problem. Amazingly, I spoke to Apple Care via chat, and then went in to the Apple Genius Bar, and they claimed not to be aware of the problem. At the Genius Bar they checked out my iPhone, and it passed all diagnostic tests, but still couldn't get GPS to work properly. The Genius guy shrugged and said it could be an iOS problem, but he didn't know. Thanks. A couple other interesting things I've noticed is that the Bluetooth connection to my car's stereo is shaky -- it will skip when playing music, or sometimes no sound at all for a second or two -- and it can no longer find the wifi in my office (which clearly exists because I can connect to it through my laptop). Given that location services also relies on wifi and bluetooth, I've got to believe these are all connected. I'm about ready to toss my iPhone and get a Samsung despite the cost. As others have mentioned, a smart phone without a working GPS is pretty dumb.