My current contract with O2 is coming to an end soon, and while the last 18 months with my iPhone have been ‘fun,’ the cost is something I’m seriously considering as possibly not worth bearing. The question: do I continue my contract, seek another provider, or drop the iPhone as a data device altogether? Bear in mind that I haven’t come close to using all my inclusive texts and minutes on the £35 plan I have been on, and don’t…