I have a spare mobile that I bought from a popular British retailer, Carphone Warehouse, for 99p. That was a special offer, but it's still on sale for £4.99. Th

I have a spare mobile that I bought from a popular British retailer, Carphone Warehouse, for 99p. That was a special offer, but it's still on sale for £4.99. There's no contract attached to it, and you can swap out the SIM card for any one you wish. It's a Samsung, doesn't do anything fancy, but it calls and texts without a problem, the battery lasts for weeks, and the signal is rock-solid. It's an ideal spare phone. I keep it in the car for emergencies, and take it out to charge it once a week or so. It's so simple that I actually prefer using it to a smartphone!