The SIM card of an iPhone 4 is a memory card that stores contact and phone data. Transfer the SIM card from an old iPhone to a new iPhone by opening the SIM card tray and replacing the card.Know More
Power off the iPhone 4 by holding the button on top of the phone and the home button at the same time for between 15 and 30 seconds. Swipe to turn off the power when directed to do so.
Hold iPhone so that you can see the bottom of the phone. Insert the end of a paper clip into the small hole on the bottom of the phone, and firmly press until the SIM card tray pops out.
Pull out the SIM card tray, and place the SIM card in it, aligning it with the edges of the tray. The writing on the SIM card should face up.
Hold the tray above its slot on the bottom of your phone, and push in until you hear it snap into place. Turn the phone right-side up to make sure that the SIM card tray doesn't fall out.
According to Consumer Cellular, a SIM card is usually located under the battery in a cellphone. This may vary depending on model and maker. A SIM eject tool is sometimes necessary to remove the SIM card.Full Answer >
A SIM card that has been locked by entering an incorrect PIN three times can be unlocked by entering a PIN unlock key (PUK). The PUK can be found on the information sheet that comes with a SIM card or can be provided by the SIM network carrier.Full Answer >
A Verizon phone without a SIM card cannot be used on another network. This is because Verizon operates using CDMA technology.Full Answer >
If a cell phone doesn't have a SIM lock, insert the SIM card into the new phone and it should work so long as the phone supports the carrier's frequency band. Most cell phones have a SIM lock that prevents access to the network if the SIM card belongs to another carrier. If inserting a new SIM card prompts a request for a carrier code, the phone is SIM locked.Full Answer >