Over the weekend, SlingPlayer Mobile 1.2 was released for the iPhone, and it marks a big step for both the application, as well at AT&T and data streaming. If you are unfamiliar, SlingPlayer Mobile allows you to connect to a Slingbox, which in turn lets you watch live and recorded television right on your device. The problem in the past was that AT&T wouldn’t allow all that data on their network, so you’d have to be connected to a Wi-Fi hotspot in order to use it. Well now, with AT&T supposedly working to optimize and improve their network, they have now allowed SlingPlayer Mobile to work using their 3G connection, giving users a real way to watch TV and control their DVRs remotely, wherever they have cell or Wi-Fi connectivity. We’ve tried it out, and it’s great. We definitely recommend giving SlingPlayer Mobile a try.