mobile

Hi there Yota fans! I own this device for several months now and first time i used GPS couple weeks ago on my snowboarding holidays. I used the SKI+ app and through the whole week there was no single day when all my runs were tracked - either the speed or part of runs were missing so i blamed the application (though my good old HTC One X was behaving way better and gave better details when using exactly same app same amount of time).
So couple days ago i've installed Endomondo on my Yota 2 device. First and second day it tracked my bicycle run and walk okay but today during bicycle run GPS signal was lost several times. Then bit later i went for a walk (same route as a day before) and GPS signal was again lost several times and that makes me bit worried. Does any of you experience similar issues?