The mobile phone can be a useful aid on a hike, but you cannot rely on it in all situations or areas.
In many places in the mountains, there is poor coverage, especially in the national parks. Check your mobile coverage before your trip. Telenor and Telia have their own coverage maps.
Check UT.no whether the cabin you are going to visit has coverage.
Do not agree on calling times. You may be in areas without coverage when you should have called.
Recharge your battery before you go on a trip. Save your battery, you may need it. Bring a charger, but remember that most tourist cabins don't have electricity.
An emergency charger is important to bring - remember to have this fully charged before the trip.
Store your mobile phone and any spare battery as warmly as possible. Cold greatly reduces battery capacity.
Store your mobile phone and emergency charger in waterproof packaging.
If you do not have coverage, search for the heights.
If you can't make a call, try sending a text message. It comes through much easier.
Remember that a mobile phone can never replace regular hiking equipment and mountain sense.