How to insert or remove the SIM card on the iPhone 3G or 3Gs.
The SIM card on the iPhone 3G / 3GS is located on the top of the device, use a paper clip or the SIM extraction tool (which you have probably lost!) to pop out the SIM card slot by inserting it into the hole in the top of the iPhone.
Next slide out the SIM from the holder, check the diagram below for easier instruction.
Inserting the SIM card is just a case of placing it in the SIM holder and carefully inserting it into the iPhone.
How to insert or remove the SIM card on the iPhone 4 GSM model (GSM is the model with the removable SIM Card).
The micro SIM card on the iPhone 4 is located on the side of the device, use a paper clip or the SIM extraction tool (which you have probably lost!) to pop out the SIM card slot by inserting it into the hole on the side.
Next slide out the micro SIM from the holder, check the diagram below for easier instruction.
Inserting the SIM card is just a case of placing it in the micro SIM holder and carefully inserting it into the iPhone.
