T-Mobile and Sprint announced their latest attempt for a merger.<br />According to the mobile carriers, their $26 billion all-stock deal could create thousands of jobs, while leading to the next generation mobile network.<br />But this is the third attempt in four years to secure a merger, and regulators have been skeptical.<br />Should the merger go forward this time around, the joint entity would retain the T-Mobile brand, while taking on Sprint's customers. <br />