Camera capture response time need to be within 1 second Camera continuous shooting mode: shoot 20 images When the changer input, LED should be light up within 3 seconds "Ringtone" should be rename to "Alarmtones" in clock tone setup option, check attached picture. "when connect with earphone: 1. Single click, the feature should be pause/start2. Double click, the feature should be switch channels " When user open FM radio first time, and after search all channels, must start to play from the first channel. Double click picture to zoom in 2X, and limit value is 2X, don't allow to zoom in anymore