As with Samsung's Gravity 1 and 2, the Gravity 3 is a messaging phone for T-Mobile. It's very similar to its predecessors, but receives a fetching makeover.
The right spine houses a dedicated camera button and a MicroUSB charging port, while the left spine hosts the volume rocker. Since there's no dedicated headphone jack, anyone wishing to make wired calls will need to use a MicroUSB headset. There is, however, stereo Bluetooth support for hands-free calling.