[header] How to wipe cache partition in motorola moto g (2nd gen ) [title] Turn your phone off. [step] If your phone is turned on, press the power button (located on the right edge of the device). Hold it until the " power off " option appears on the screen. 
The just choose the " power off option " to power down the device. [substeps] Also, ensure that your device is unplugged from any other devices or accessories such as a pc, charger, etc.