LG’s unan**unced flagship G3 shown in leaked photo LG is bringing one of 2013's most useless smartphone gimmicks back for a second go. GSMArena has posted a new leaked picture of*the rear panel of LG's upcoming G3 smartphone that clearly shows the new device will keep the Rear Key*that the company first debuted on the LG G2, thus ensuring you'll be able to adjust the volume and power on your phone by touching the back panel. The new Rear Key is more circular and much flatter than the Rear Key we saw on the G2, so at least this time the device will fit more comfortably in your pocket.