Hi manu EL,

have you tried at the moment the issue appears on your Samsung A3, any 
other smartphone device, to see the GNSS receiver capabilities ? Don't 
forget that the GNSS receiver on any smartphone works without the need of 
GSM modem. You may have the device into airplane mode without any problem 
for navigation needs. Exactly as i am doing from 2012 into my 4 smartphone 
different devices i had. Also, i can track my route with the screen off, to 
save battery.

At the end i remind to you the company Garmin. Devices like the new GPS Map 
66S, can work from 8 up to 20 hours. The working hours depends from the 
user navigation needs. Into track recording mode with the screen off, can 
last a lot of days. Just only with 2 AA batteries.


On Thursday, August 15, 2019 at 11:57:04 AM UTC+3, Manu EL wrote:
>
> Hello, I often can't get GPS fix in mountain areas with osmand. When using 
> GPS Test, the constellation shows 10 or more satellites above me, which are 
> green, but the number of used satellites is 0 => no fix. Randomly it may 
> work again (like 9 or 10 satellites used out of 10 satellites seen) then 
> loses fix again. I have noticed that behaviour only when I'm in mountains 
> area. Otherwise Osmand gets GPS fix easily. It occurs with other 
> localisation apps. But often osmand is also launched simultaneously. I 
> don't understand. I have a Samsung galaxy A3 with Android 6.0.1. 
> Would you have any idea? Thank you

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