I agree with all that is being said about cell towers everywhere, falling off a cliff because you're busy texting and not watching, etc.
But, how about the advantages? Several years ago after a Seal River trip in far northern Manitoba, our shuttle boat guy told us about a group on an adjacent river, who were smelling smoke real bad one morning (we actually were watching this fire to the east of us quite a bit). They got very scared and set off their aircraft grade emergency beacon. C-130 Hercules takes off from Winnepeg and at a lot per hour to put this plane in the air, tracked the beacon to 6 campers and 3 canoes in camp along the river. The helicopter from Churchill was in the air quickly and after 2 or three trips got everybody shuttled to Churchill. The locals were outraged and amused. The govt considered charging them for the rescue.
If they had been able to call on the cell phone, they probably would have been reassured that this fire was no threat but the wind brought smoke and that is why they got scared and set off the beacon.
They were in no danger and without direct contact they had no way of knowing that.