Einleitung
To change or clean the logic board the phone must be dissembled. The tools required will be a T-6 screw driver.
Werkzeuge
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Flip the Nokia 3300B over with the back-side facing towards you.
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Gently press the button on the back of the battery cover to release the cover and slide up.
 
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Gently push the blue tabs on the top of the phone out of their slots.
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With the phone facing up, pop the blue faceplate off by using your fingernail (or some tweezers) and working your way around the phone.
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Note: If the blue cover does not detach easily use your finger nails to try and split it open, as seen in the picture.
 
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Grab the sides of the keypad and lift each side up vertically, until the keypad is completely removed.
 
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Pull up on the front case containing the screen to separate it from the rest of the phone.
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Gently lift the main board out of the back case.
 
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To reassemble your device, follow these instructions in reverse order.