XiaomiTime posted that Xiaomi is developing a Pocket Guitar accessory for the rear subscreen of its upcoming Xiaomi 18 Fold phones. The device features guitar-like controls, Bluetooth connectivity, battery power and a quad-gear layout. It works only with the Changba app in China. A linked report from XimiTime calls the item an interesting feature for the Xiaomi 18 series and ties its launch to the phone lineup.