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The X3 offers a slim design in either blue or red.
Here's the blue version. On the left side are the dedicated navigation controls.
The X3's camera lens sits on its rear side. The ports for the USB cable, charger, and headset sit on the phone's top end.
The X6 has a trim profile and an expansive touch-screen design.
The X6 comes in blue and red. You can watch videos in a landscape orientation.
With the camera lens and flash, the rear face of the X6 resembles a digital camera.
The X6's volume rocker, camera shutter, and locking switch rest on the X6's left spine.