Back to ZTE WF721 Wireless Home PhoneCharging Your Device BatteryZTE WF721 Wireless Home Phone on Other 1.0.1Learn how to plug in your device.1.Locate the power socket on the back of your device.Note: Your device can use external or battery power.Step 1/42.Insert the power cable into your device.Step 2/43.When your device is finished charging, remove the power cable.Note: You may also continue to use external power. Your battery level can be seen in the Web User Interface on any screen.Step 3/44.Step 4 of 4:You've completed the steps!Step 4/4