I sometimes walk my dogs in reasonably isolated places,in South East England, (East Kent), although always only a few miles from habitation. I'm concerned that if I had a problem, heart attack or similiar, (I'm 69) people would not know where to find me. Without giving up these lovely walks can anyone kindly suggest any suitable button mobile phone with SOS button and with bluetooth preferably please? I've seen a number of 'senior' phones, but personally, stupidly maybe, I don't see myself in that category. I'm pretty 'cool' according to the kids! Most grateful for any advice, and many thanks in advance.