Is this the best smartphone plan ever? T-Mobile has a great plan for those who use their smartphones primarily as data devices. But finding the plan can be a challenge. Don't talk on your smartphone much, don't like the idea of a contract, and don't want to pay a lot of money per month yet still have plenty of data? T-Mobile has the plan for you, if you know where to find it. For only $30 per month, T-Mobile has a plan that offers 5GB of 4G data, unlimited texts, and 100 minutes of talk time. It's the cheapest prepaid plan I've seen from any of the major U.S. carriers. Verizon's pay-as-you-go plans start at $60 for only 500MB of data; $70 gets you to 2GB. AT&T's prepaid plan for smartphones is $65 per month for only 1GB of data. Sprint's pay-as-you-go plan is $70 for smartphones, with unlimited data At half the price or less, and with 5GB being a pretty roomy data allowance, the T-Mobile plan is so good I'm almost afraid writing about it might make it disappear. Finding the plan You won't find the plan listed on T-Mobile's main site -- not that I could locate, when I went looking a few weeks ago after hearing about it. Even T-Mobile's "Bring Your Own Phone" page doesn't suggest there's a prepaid option lurking out there. T-Mobile will shift you over to its prepaid site, if you do a search for that. The home page of that site gives the impression that plans begin at $50 per month for only 500MB of 4G data. However, if you go to the page listing all prepaid plans, then scroll down to the bottom, you discover the magical $30 option: more @ http://news.cnet.com/8301-33620_3-57587175-278/is-this-the-best-smartphone-plan-ever/