T-Mobile logoT-Mobile has announced several new unlimited data plans that that cap your monthly use of 4G/3G data; once you hit a certain level of usage, you’re limited to EDGE/2G speeds until the month is over. Unless you want to upgrade your plan mid-month, that is.

While not necessarily optimal depending on your data needs, the kicker is that there are no overage charges, so this may be the solution for some of you data fiends out there … if you don’t mind screeching to an almost halt on your downloads once you’ve used up your monthly cap of high speed surfing.

What will happen is you will get to use the stated amounts of data on T-Mobile’s 4G/HSPA+ network, and as you near the cap you will receive a text message asking if you wish to upgrade to the next plan, or continue with what you have and be reduced to EDGE/2G speeds for the remainder of the month.  Of course you start all over when the next month rolls around, but say it’s only the 10th and you’re about to hit your cap. You may wind up upgrading for fear of  moving like a snail.

Single line, contract prices with Unlimited Talk and Text included in all plans:

  • 200MB of 4G – $69.99
  • 2GB of 4G – $79.99
  • 5GB of 4G – $89.99
  • 10GB of 4G – $119.99

Pre-paid plans including Unlimited Voice and Text:

  • 100MB of 4G – $50
  • 5GB of 4G – $70

A two-line family plan with 2GB of data will run $139.99, a price that T-Mobile claims will represent “a savings of more than $350 per person, per year on a two-line annual plan.”

“Our new rate plans powered by America’s Largest 4G Network put us in an excellent position to capitalize on the 80 percent of wireless customers in America who want smartphones,” said Cole Brodman, chief marketing officer, T-Mobile USA. “We’re providing customers with the 4G coverage they need, an exciting portfolio of 4G smartphones, and the value and flexibility to meet the diverse desires of their entire family.”

While you can easily debate if HSPA+ qualifies as 4G, it’s what T-Mobile has to offer, and it is apparently precious enough they feel you should only have so much access to it in a month.  This is obviously the way the future of pricing is going to go, and the days of just tooling around the mobile Web without a care in the world are quickly becoming a memory.  Yes, you have unlimited data with these plans, but you make up for it in speeds that will make you long for 3G.

What do you think?  Do any of these new plans appeal to you?