iOS is friendlier than Android here, but it still needs one setting:
- 1Settings → Pack → Location
- 2Pick Always
- 3Turn Precise Location on
In Pack, Settings → bottom of the screen, the grey line should read GPS: always ✓ · task ON · background during a ride.
What we measured in the field
- Phone stowed, bike moving, screen locked — works. This is the case that matters and it is the one we tested most.
- Another app in front — works.
- Locked and parked for several minutes — iOS can put the app to sleep and your dot stops updating. You are not moving, so the dot is still in the right place; it catches up when you wake the screen.
IF IOS KILLS PACK MID-RIDE
It happens — iOS reclaims memory from apps in the background. Pack notices and rebuilds the ride tracking by itself, without you touching anything.