Sprint rolled out Android Jelly Bean for a version of the LG Optimus G back in March, and now it's AT&T's turn to deliver the goodies.

Following Sprint's footsteps, rival carrier AT&T finally started rolling out the Android Jelly Bean update for the LG Optimus G smartphone. According to the company, the update comes with a number of exciting improvements and enhancements. The notification display, for instance, is designed to group updates of the same app together, thus allowing users to easily expand or collapse notifications.

"Customers will also be able to view the full text of an SMS message and the full photo of a MMS in the notification window," AT&T's Cathy O'Shea notes in a blog post announcing the update. "The new Tasks app lets you sync your tasks in Outlook so you always have insight into those important to-do items.

According to O'Shea, the new update to the Android mobile operating system also makes the LG Optimus G even easier to use, because it maximizes the power of the Qualcomm Snapdragon S4 Pro 1.5GHz quad-core processor.

With Jelly Bean on board, the LG Optimus G can now deploy the Isis Mobile Wallet as well. Isis Mobile Wallet is a much-talked about free app that allows users to store a virtual version of payments and loyalty cards while keeping track of offers and deals. The app is currently undergoing trials in Austin, Texas and Salt Lake City, Utah. To get the Isis Mobile Wallet in these two cities customers can visit an AT&T store, take the special SIM card and download the app.

Other features available with the Android 4.1 Jelly Bean update include Google Now, an improved camera app, a smoother user interface, a better Browser and a tweaked Calendar, among other things.

The update is rolling out Over-the-Air (OTA), so it should land on LG Optimus G devices anytime now. Those who want to grab the update immediately can always choose to manually update by pulling down the notification panel and accessing Settings > General > About Phone > Software Update > Update Now and following the instructions. LG Optimus G owners need a Wi-Fi connection to grab the update, as it's quite a big file.