T-Mobile planning to introduce “Unlimited Any Mobile” on April 4th
T-Mobile is now planning to introduce unlimited calling to any mobile. Most US citizens already have cellphones, so this pretty much translates to unlimited minutes. According to TmoNews’ sources and leaked document, Magenta will be introducing this as an added feature. It will be available beginning April 4th, for an extra cost of $10. As it is a feature, no contract will be required. Another of the benefits may be that customers’ overage charges would be substantially decreased, if they get the Unlimited Any Mobile add-on. Your minutes will stay the same, but most of them will probably not be used.
If you’re a current T-Mobile customer and love to talk, you can add this to your plan without extending your contract. In addition, it doesn’t affect your current plan in any way, meaning you can add or remove the new Unlimited Any Mobile whenever you want. While T-Mobile does offer unlimited plans already, this is a great feature for folks who don’t need the minutes year round.
Source: TmoNews

very nice