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5. Replace the back cover.
Charging the Battery
Your phone’s battery should have enough power for the
phone to turn on, find a signal, and make a few calls. You
should fully charge the battery as soon as possible.
If the battery is low, there will be a pop-up message on the
screen. As you charge your phone, open the notification
panel and drag the panel downwards, the screen will show
you the exact battery level on the status bar.