Nokia 3390 ユーザーズマニュアル

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1&2 Press the back cover release

button.and slide the cover forward.

Lift the cover off the phone and set 
it aside.

Hold the phone as shown 
here.

Gently pull the cover until it 
pops off the phone.

Lift the keypad from the 
back of the old cover.

Place the keypad into the 
back of the new cover.