The T-Mobile myTouch Q by LG (C800) and the T-Mobile myTouch by LG (E739) are smartphones designed and manufactured by LG Corporation for T-Mobile USA's "myTouch" re-branded series of phones. They run the Android 2.3.6 "Gingerbread" software. CyanogenMod supports the myTouch by LG. The two phones have similar features except for these differences:The "Q" does have a slider-keyboard, the non-Q is a keyboardless design, The "Q" is both thicker and heavier than the non-Q, The screen on the "Q" is smaller than that on the non-Q, The "Q" does not have a front-facing camera, the non-Q does have one with VGA-resolution, The "Q" has a camera feature called "Auto Snap on Smile" that the non-Q apparently does not have.