Gigabyte GSmart M3447 Quick Guide - GSmart M3447 English Version - Page 6

To remove the SIM card 1. Remove battery. 2. Use your finger to slide the SIM card from the card slot. Battery Your phone comes with a rechargeable battery. Battery life varies depending on the network, used applications, and the type of connections attached to your phone. To install the battery Insert the battery. Make sure the contacts of the battery are aligned with the connectors on the battery slot. • Do not store the battery in temperatures below -10ºC or higher than 45ºC. Charging the Battery To fully charge the battery, charge it for 2 hours. 1. Plug the battery charger to the Micro USB port of your device. 2. Plug the AC adapter to an outlet to start charging. NOTE: • The battery can also be charged when you connect your phone to the computer. • To ensure safety, do not remove the battery from the phone while the AC adapter is connected or while it is being charged. To remove the battery Use your fingertip to lift the battery, and then, remove it. Lock/Unlock 1. Lock the device: To replace the back cover Secure the hooks on the back cover with designated holes on the phone and close the back cover. NOTE: To ensure battery performance and avoid the risk of fire: • Use only original batteries designated for the phone. Tap on the keypad. Then tap Yes on screen to lock the device. When you do that, the keypad and the screen are locked. 2. Unlock the device: Press Talk Key, and then, click the green ball on screen, or press * to unlock the device. M3447│6