Several users have reported issues with Ski Tracks on Samsung phones.
We have identified that this is a Battery Power Saving Mode setting.
The Power Saving Mode on Samsung phones turns off GPS, this is a requirement for Ski Tracks.
In Settings go to Battery.
Select Power Saving Mode and turn Off.
Also make sure that any power optimisation for the Ski Tracks app is disabled.
Please can you contact us at email@example.com and we can send you more information about GPS issues.