Sasha_EU, Maybe neither one nor the other. IMHO problem with the original data (A-GPS) to compute the orbits,
received over the cellular 4G / 3G network - wrong almanac.
Try
- pull out the SIM cards or opt-out,
- in the "Location" to leave a "GPS satellites"
- add in the energy consumption "GPS test" is not economical in application
- time to set the maximum screen work - 30 minutes.
- turn off the tablet, go into the open field, and turn on the tablet.
First, the apparatus for 1 minute to find the satellite 2 after some time two of the satellite, the satellite with a pause 3, 4, 5 and 6, then.
Then wait 5-7 minutes more - location should be defined (in a 8-9 visibility in the use of 6).
GPS is useful to work 5 minutes with pauses (upload and download GPS test) - is to find faster and faster.