T-Mobile USA’s MVNO Ultra Mobile is keeping their fingers crossed that their new $19 monthly service plan will be able to snag the hearts, minds and wallets of those who are sitting on the fence with its low price. For $19, what do you get? Well, your smartphone will be able to enjoy 250 voice minutes each month, unlimited global SMS (which Ultra Mobile claims is capable of working on any mobile number across 194 countries), 50MB of high-speed data and $1.25 for international calling purposes. Do you think that Ultra Mobile has what it takes to succeed?