mobile signal dropping, GPS not accurate

[zijian626]

1) when i travelling from place to place, my XZP will suddenly lose all the mobile signal

the signal bar on status bar will become blank(no signal), i use dual sim, both sim card face the same problem.

it takes few seconds(more than ten) to reconnect to the mobile signal.

for a 30mins ride, it will happened more than 5times, really annoying.

2) use GPS to locate myself at outdoors, and still can't get accurate location, don't even mention in indoor. tried to callibrate the GPS an still the same problem.it make me frustrated when try to play pokemonGO or navigation.

please advice.

[rayvin400]

same. If my mobile connection just suddenly disappears, i turn the device off and on again and the connection comes back. This has happened for the last two weeks or so when I travel to places within my city. This has not happened before, as I've always had coverage before- and as soon as i turn the phone back on coverage is back. 

[azzido]

My gps is sometimes not working at all (endless loading spinners without result) or is not accurate too, but I do not have problem with pokemons... No longer a kid, so this I cannot confirm.