While I personally would have preferred a dual-core processor (for that extra kick of power), the Xperia Play 4G is no light-weight. The Xperia Play 4G's single-core 1GHz processor keeps the phone running buttery smooth, even when playing more graphically intense games.

Call quality was even, though AT&T's reception was shaky here in San Francisco. Reception would frequently drop from three bars to none, and on occasion I would lost HSPA+ connectivity. The earpiece was loud and clear, and the people I called had no trouble hearing my side of the conversation.

When I first reviewed the Xperia Play on Verizon, I complained about using 3G to download large game files. When the Play came to AT&T, I was hoping the faster HSPA+ network would remedy the languishingly long download times. Unfortunately AT&T's 4G download speeds varied so much, that you'll more likely want to stick to using Wi-Fi to download and play games online.

Speaking of downloading games, don't expect to download an entire library of apps to your phone. The Xperia Play 4G still has the same minuscule memory that its Verizon cousin had back in the spring, a sparse 380MB. Yes the Play 4G comes with an 8GB microSD card and you can add extra storage by buying a larger card (up to 32GB), but since apps are stored in the phone memory it doesn't do much good for those of us that love to download apps.

Camera and Media