FreedomPoP Sleeve Rocket 4G Mobile Hotspot for iPod Touch 4th Gen
Don't buy. or you will regret.  I paid $14 for it on a sales, but wish I didn't. the problems are :<br />(1)  98% of time there are no connection. even at the locations where wimax coverage map shows full coverage, when i step into the building,  the red light on (no connection)<br />(2) sprint is closing wimax towers by 2015, so instead of getting improvement on the current coverage issue, you will get less and less coverage, worse than than now.<br />(3) it took hours to get a full charge,  then it lose c