Introduction
Check the device's troubleshooting page before replacing the SIM card. Also make sure you are installing the correct SIM card.
You may want to install a new SIM card if you change carriers, want a new phone number, cannot make calls, or cannot receive service anywhere.
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Make sure the screen is face-down and the camera is opposite you.
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Insert the flat end of a spudger into the phone's top right rectangular slot.
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Use the spudger as a lever to pry open the back of the phone.
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With the spudger still inserted, carefully slide the spudger down the side of the phone.
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Gently peel off the back cover with your hand.
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Conclusion
To reassemble your device, follow these instructions in reverse order.
