Pacificdeals Power and Volume Key Button for Moto G4 / G4 Plus(Silver) Moto G4 Plus (4th Gen) power button not working. Power or sound button is unresponsive. The power button for Moto G4 Plus is daamged/broken. The sound button has stopped working. Get power button issues. Wanna fix and repair broken side buttons problem for Moto G4 Plus. Come here to know how to replace Motorola Moto G4 Plus power & sound button and test it.