Review: Samsung DoubleTime for AT&T
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.
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.
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.
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.