UK Thread- Which network will you get IPhone 5? Three network had unlimited data allowance-and is known to be the fastest most reliable network and one of the cheapest. T-mobile seem to have started to have unlimited internet allowance too but they have poor reception since they have merged with orange their calls go to voicemail majority of the times.-rubbish network-and overcharge. O2- they cap on data usage 500Mb or 1gb depending on tariff.can be expensive. Other network people hardly buy-or buy coz they have been with the network for years.