-If you are a T-Mobile customer, don’t get excited about the possibility of having an iPhone soon.
-Your billing cycle may be subject to change. AT&T uses a system of charging their customers ahead of time for services which will be used in the coming month, excluding overage charges. This will more than likely be adopted by T-Mobile now.
-Say goodbye to unlocking. Up until now, T-Mobile subscribers have been able to unlock their devices with provided codes. AT&T does not provide these liberties with their SIM cards. Instead, they charge roaming.
-It is very likely that T-Mobile will follow in the footsteps of the AT&T. This means the unlimited data plan will likely be dissolved. That way they can get more money when subscribers go over the 2GB limit.
-Rollover minutes will be welcomed. AT&T lets customers keep unused minutes for 12 months, T-Mobile’s “expire if unused” plans will probably be a thing of the past.
It seems that the industry has grown to where mergers and partnerships like this and the Microsoft/Nokia one are the only ways these companies can continue to grab marketshare or remain dynamic.