 Sony Ericsson described the design of the T630 as 'Putting an end to phones having a front and a back, the T630 has two sides.One for the camera... the other for telephony...'

With the announcement of the K700i and S700i, Sony Ericsson introduced a new marketing term, "Dual front" to refer to camera phone where the "back" of the handset is styled as the "front" of a digital camera, hence the term of "dual front".The market responded well to this design and Sharp was the next company to begin designing dual front products, by producing a clamshell phone with a dual front design (Sharp 902).