If you have anything helpful to say about the Simplicity tariff and using it with the iPhone please post here. Also, if you need any help with this again just post here. I have a question. How are other costs of the simplicity tarriff covered? e.g. calls abroad etc I will be buying a 16GB 3GS for £440 off O2. I will replace the payg SIM with O2's Simplicity tarriff. £20 month - 800mins - 1600 texts - unlimited web bolt-on. If i want to connect to wi-fi, just enter the number of my payg sim. Total 12 month cost will be £680, i get better value, and i wont be tied down when a new version comes out next year. Only downsides are no visual voicemail or call merging. This is fine as normal voicemail will suffice, and i dont need to speak to more than one person at a time.