Review: Samsung DoubleTime for AT&T
Apps
The DT has the fewest apps I've seen on a phone out of the box — just 32. Six of them are from AT&T, and only one - Yellow Pages - couldn't be deleted. There are few extras of any kind outside of the standard stock Android apps. You'll need to head to the Android Market if you want to live it up a little.
Bluetooth
The DoubleTime supports mono and stereo Bluetooth headsets. I had no trouble pairing with either. Sound quality through mono headphones was good; on par with the standard voice calls. Quality through stereo headphones was also good. It also connects with computers and/or other phones for pushing files around.
Clock
The DoubleTime offers the standard Android clock on the lock screen, which is visible when the device is first woken from sleep. It is a nice, large digital read out that's easily visible everywhere except under direct sunlight. It can't be customized, though.
GPS
The DoubleTime offers two options for directions: Google Maps and AT&T Navigator. I enjoy Google Maps and think it does a great job of providing directions. AT&T Navigator is a solid alternative, but AT&T charges $10 per month to use it. Both will get you from here to there with no problems.