If you can lease a vehicle, why not a smartphone? That's O2's line of thinking, anyways, as the UK carrier has begun piloting a rental scheme -- called O2 Lease -- with the iPhone 4S in the driver's seat. For a 12-month lease period and £55 per month, you'll be able to rent the 16GB version and get 750 minutes, unlimited messaging, 500MB of data and insurance. Want a 32GB model? That'll be an extra £10 per month. Since it's a rental, you'll be required to give the phone back after your year is up, but at that point you're free to grab a new
