How to put in a sim card How do I insert a SIM card? To install a SIM card: 1 Remove the back cover 2 Remove the battery 3 Insert the SIM card into the SIM card slot with the gold contacts facing down. The SIM card slot is marked with a 4. Insert the battery and align the contacts on the battery with the contacts in the device. How do you install an iPhone SIM card?Insert the SIM card into your iPhone. Turn off your iPhone. Make sure the size of the SIM card is suitable for your p...