Charge the battery over USBBattery low, but you don't have a charger with you? You can use a compatible USBcable to connect your phone to a compatible device, such as a computer.You can use USB charging when a wall outlet is not available. Data can be transferredwhile charging the device. The efficiency of USB charging power varies significantly,and it may take a long time for charging to start and the device to start functioning.You can use your phone while it's charging.To avoid breaking the charger connector, be careful when connecting ordisconnecting the charger cable.Switch the phone on or offSwitch onPress and hold the power key until the phone vibrates.Switch offPress and hold the power key .Use your phone for the first timeGet started with your phone – copy contacts, messages, and other stuff from yourold phone. Your phone guides you when you switch your phone on for the first time.Get started 13