I don't carry a spare/ cheap 'phone but I do carry a 'phone charger with a "cigar lighter" plug. That runs and charges the 'phone in the 7 on the road (and its my satnav anyway), if it fails, and in anyone else's vehicles. For touring there would always be a local mains charger somewhere in the luggage as well. All of the relevant documents will be stored on that 'phone as well as online: insurance, medical insurance, itinerary etc. usually both in TripIt and as pdfs. And BlatChat is on the home screen. :-) Jonathan