Maintaining Your Smartphone13Maintaining Your SmartphoneThis section provides information about removaland replacement of components (SIM card andmicroSD card) and charging the battery.BatteryCharging the BatteryCAUTION: Do not use any non-approvedchargers as they may damage yoursmartphone and invalidate any warranties.NOTE: It takes at least one charging-discharging cycle for the battery to reach itspeak performance.1 Ensure that the battery is installed.2 Using the Mini-USB to USB cable, plug thepower adapter into a power outlet and theninto your smartphone. You can also chargeyour smartphone by connecting to acomputer USB port.3 Charge your smartphone for about 2 hours.Ensure that your smartphone is fully chargedby checking the charge status indicator onthe display.Removing & Replacing the Battery1 Turn off the smartphonePress and hold the power button for 3second, and then tap Power off.MINI USB