Introdução
If the keypad has stuck buttons or is unresponsive, you'll need to remove it and clean it or replace it entirely. Follow this guide to do so.
O que você precisa
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Remove the battery cover by pushing downwards and sliding the cover away from the device.
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Quase terminado!
To reassemble your device, follow these instructions in reverse order.
Conclusão
To reassemble your device, follow these instructions in reverse order.