Plans:  

T-Mobile offers standard plans for all types of callers—prepaid, individual, family, data and business (which few cell phone providers offer).  Their signature mobile-to-mobile plan is called MyFaves, which lets you call five numbers anytime, anywhere for free, no matter what network they’re on.  T-Mobile also offers a number of free cell phones when you sign a contract.

Minutes/Features:  

Free nights and weekends starting at 9:00 p.m. and free domestic long distance come standard with any T-Mobile plan.  But this cell phone provider does lack standard mobile-to-mobile, and roadside assistance, which can be a nice feature in a pinch.  They have a wide selection of budget phones , but that selection minimizes with PDAs and smartphones.

Fees:  

This is where T-Mobile shines.  The cell phone provider has the same activation fee of $35 and contract-termination fee of $200 that most providers have.  But their plans are cheaper than most other providers out there, which includes T-Mobile @ Home, a home phone plan for only $10 per month.