AT&T have announced an expansion of their pre-paid Mobile Share plans, offering relatively low-cost plans coupled with incredibly low data allotments. For US$20 a month you can get a whopping 300 MB of data each month, while $50 gets you 2 GB. Both plans include unlimited talk and texts.
Mobile Share plans create a bucket of data that can be shared among a number of different phones on one account. Account holders pay for the cost of their data along with a monthly charge for each phone activated on the account. Your price per phone goes down as you add more phones to your plan. So that $20 a month plan that looks like a crazy good deal is actually a $20 a month plus another $50 a month per smartphone.
This pricing struct