How to insert SIM card in my iPhone?
iPhone mostly accept micro sim and you can use sim ejector tool to fit it in your phone..Even if you can’t buy a micro SIM, you can still get your regular Mini SIM cut to a Micro SIM. Any local mobile store would do it for a low cost. It is a very simple process. Once after getting a Micro SIM, You can insert it into your mobile phone and start accessing it. If you are having any problem in accessing your Micro SIM, ensure it is activated. If it has been activated and still doesn’t work it might be the sim dislodge in the slot try to remove and insert it again, make sure that the phone is free from network restriction. If the device has been network restricted..you can remove this using remote unlocking service from any vendors online like Superunlockcodes.com
iPhone 3GS takes the traditional SIM card while the iPhone 4 takes micro SIM. To insert the SIM for iPhone 3GS, use the SIM ejector tool (inbox accessory) to insert the pinhole on the sim card tray, press firmly and push it straight in until the tray pops out. For iPhone 4, the sim card tray is located at the right side of the phone.