Hello I have same problem. I had wrote other topics already and many people have same problem. The Waze and the Google maps regurarely lose the gps signal especially after a 3rd party application opened them. The google maps go doesnt get accurate lcation at all. I am working as driver and it is unacceptable for this price. The samsung must fix the problem asap or calling back the phones. All chinese phone has better gps chip and this company save the money on few dollar chip. Ridiculus!