I personally wouldn't touch vodafone with a barge pole due to reception issues and poor customer service.
iphone 4 - Black - 16gb. Firmware : 5.0.1, with Siri. iPod Touch 16gb - 1st Gen. I want the next iPhone to exceed my expectations ! __________________ MacBook Air 11” Core i5 1.6GHz 4GB 128GB •1.6GHz dual-core Intel Core i5.
Seriously, you are asking this question on the O2 forum? I also would not touch Vodafone with someone else's barge pole either. All I will say is they are the only UK network that takes 2 full days to port into. O2 takes under 4 hours!!!
On pay monthly here but my dad has his iPhone 3GS on O2 PAYG which he is perfectly happy with. Just remember though with any PAYG package on any network that includes a data plan (required for an iPhone or other Smartphone) you have to top up on a regular monthly basis to keep a data allowance. On O2, the best PAYG tariff for a smartphone is the text & web tariff. Top up £10 a month and you get 300 texts and 500mb data as well as WiFi use + your full £10 to use for calls. If you find your credit is piling up (because you are not making many calls) you may be better off on a pay monthly tariff. Also remember that the iPhone visual voicemail is not available on O2 PAYG tariffs (only on O2 pay monthly tariffs). No other UK network supports iPhone visual voicemail. Having been on all of the UK mobile networks at some point, O2 customer service is by far the best of any network. Its one of the few (if not the only) network to offer 100% UK based customer service. Porting in is fast too and now done in under 4 hours. O2 also offer very competitive roaming charges if you travel abroad, way cheaper than other networks. O2 regularly come top in OFCOMS customer service surveys, so that tells you they are doing something right.