Be careful while using the memory card especially while installing
and uninstalling the card.
Some memory cards must be formatted on a PC before the first
use. Make backup copies of data stored on cards used in other
devices, if you use SD cards! Misuse or other factors might cause
damage or loss of data stored on the cards.
5.3 Battery Installation:
1. Press the phone cover and slide it downwards.
2. Insert the battery with the metal contact pins facing downwards