Introduction
If you change cell carriers or buy this phone unlocked, you will have to install a new SIM card. Most new phones will come with a SIM card removal tool in the box, but any small rigid object such as a paperclip or a thumbtack will work.
Tools
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            Turn the device on it side with the buttons away from you. 
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            Using the SIM Card Eject Tool, insert the narrow end into the ejection hole. 
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            Press firmly into the hole until the SIM card tray pops out far enough to grab with your fingers. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.