Well, that’s that. After years of diligent — if sometimes misguided — work to carve out a niche for its smartphones, LG confirmed on Sunday that it’s officially giving up on the mobile phone business.

LG and TracFone today revealed the Optimus Zip, a new sideways slider that includes Android 2.3 Gingerbread and a full QWERTY keyboard. The Optimus Zip (also branded as the LG Enlighten / Optimus ...