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to static electricity or dust, do not immerse the card in water.
1
First, switch off your phone and remove the battery.
Insert the memory card with the gold contacts face downward.
Be careful while using the memory card particularly while installing
and uninstalling the card. Some memory cards shall be formatted
on the computer prior to an initial use. If you use SD cards, on the
regular basis make backup copies of any data stored on cards in
other devices. Misuse of the card or other factors might cause
damage or loss of entire data stored on the card.
5.3
Battery Installation
1. Press the phone cover and move it downwards.
2. Install the battery with the metal contacts facing downwards.
3. Put the battery cover in place and move it upwards.