If you have an iPhone 2G, 3G, or 3Gs, locate the SIM card tray in the top edge of the casing, between the headphone jack and power button.
If you have an iPhone 4, 4S, 5, 5S, 5C, 6, 6+, 6s, 6s + or an Android device, locate the tray in the right edge of the casing. Gently insert a SIM card removal tool or a straightened paperclip into the pin-sized hole in the SIM card tray. Once you release the catch in bottom of the hole, the SIM tray will eject from the phone body. Remove your card from the tray and reinsert the tray so it is secure and flush with the casing.
Last Update: May 15, 2017