AT&T reveals Asus Padfone X specs, but no price or release date

Asus Padfone X

AT&T and Asus are still teasing out the details on the Padfone X, an Android smartphone that docks into—and provides the processing power for—a larger tablet.

The Padfone X consists of a 5-inch smartphone with a 1080p display, plus a 9-inch tablet shell with a 1920-by-1200 resolution display. The phone slides into to the tablet through a rear dock connector and provides all the processing power, memory and storage for the larger screen. (When the phone is removed, the tablet portion becomes a paperweight.)

Other specs for the Padfone X include a Qualcomm Snapdragon 800 processor, 16 GB of storage, 2 GB of RAM and a MicroSD card slot. The phone includes a 13-megapixel rear camera and a 2-megapixel front-facing camera. While the tablet can make use of the phone's rear camera, it only has a 1-megapixel camera up front.

There's no word on battery life, but Asus is packing a 2,300 mAh battery into the phone, and a 4,990 mAh battery into the tablet dock. The phone alone weighs 0.33 pounds, and when combined with the dock, the Padfone has a total weight of 1.46 pounds, making it fairly heavy for a tablet of its size.

Although Padfones have been on the market for years, they've never been available through a U.S. carrier before. Asus and AT&T announced the Padfone X at CES in January, but didn't reveal any specifics beyond screen sizes.

AT&T hasn't given a price or release date for the Padfone X, but has said that it won't charge a separate tablet data plan for the device. That's perhaps the most intriguing aspect of the Padfone X—but only if AT&T doesn't make up for it with drastically inflated up-front pricing.

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