Where have all the split-keyboard phones gone? It's been roughly seven years since the days of the Nokia 6820, a messaging device with an innovative form factor, but handsets with a similar mold have become extreme rarities in the market -- if they even make it to the market at all (remember the MotoSplit?). LG's hoping to gain some ground in this area by officially announcing the DoublePlay, a unique Android 2.3 h
