This one doesn’t come as a huge surprise since the iPhone is perhaps the most popular phone on the planet and perhaps ever. The folks over at T-Mobile USA have gone on record to say that there are actively over a million Apple iPhone’s currently running on their network. In terms of model types, the T-Mobile spokesman would only say that the majority of the devices were pre-iPhone 4 which means those users aren’t having anywhere near an optimal experience but it may still be better than some of their alternatives. The spokesman went on to say that a large number of people had “taken the scissors” to their T-Mobile SIM cards. T-Mobile doesn’t currently offer a Micro-SIM solution that the iPhone 4 utilizes so people who want to use the iPhone 4 must “modify” their SIMs into MicroSIMs which can be a tricky task. Even if you get it to work with the iPhone 4 your browsing speed will be significantly reduced as you won’t receive T-Mobile’s 3G or 4G data speeds because of the radio incompatibilities between the AT&T and T-Mobile networks.
As far as getting real Micro-SIM support from T-Mobile the spokesman said that they are working on it but there is no timeframe for when they would be available. I’m sure T-Mobile will put a lot of weight on the outcome of the possible acquisition of them by AT&T before they make a decision on how they want to handle this going forward, if the AT&T deal does go through then it will be a pretty moot point. Stay tuned.