Introduzione
If you are having a lot of issues with signal reception, you may want to replace your antenna. Or if you would rather not, you may just want to buy a new phone.
Strumenti
Ricambi
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Locate the small slit on the bottom edge of the device between the back and front cases.
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Pop the back case off by inserting your finger and pulling the case away from the phone.
 
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Remove SIM card by pushing down and away from the slot, then pulling it out toward the bottom edge of the phone.
 
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Staring near the power button, use a plastic opening tool to disengage the plastic clips securing the midframe.
 
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                            Conclusione
                          
                          To reassemble your device, follow these instructions in reverse order.