Review: LG DoublePlay for T-Mobile
The phone application is simple, straightforward, and stock. The software dialer works fine, and the call log lets you return missed calls in a jiffy. When in a call, it is no problem to turn on the speakerphone, mute the call, add a line, etc.
The phone app includes the contact database, which is accessible via one of the tabs at the top of the screen. There aren't any nifty contacts widgets, but at least you can add shortcuts to your favorite contacts to the home screen, as well as add them to a folder of favorites that is visible from the phone application.
The DoublePlay supports calling via Wi-Fi for use at home, but cannot transition calls from Wi-Fi networks to T-Mobile USA's cellular network.
Calling functions cannot be accessed by the secondary display.