Hi,
I have a 4S. I've manually changed the maximum heart rate zone, which is 180 according to age/gender but actually should be 196.
I've set it to 196 using:
- long press bottom button
- Tap "gear" icon
- scroll to user profile and Tap
- Tap heart rate zones
- Tap "standard"
- Tap "Maximum heart rate"
- set it to 196
It will then remember it for a little while, like a day or so, only to go back to default again later. How do we fix this because I can't train in any heart rate zone reliably like this.