does an iphone 5 take a bigger sim card
up vote 1 down vote. Nope, you'll have to change the SIM card to put it in an iPhone 5. The iPhone 5 uses a new SIM card format called nano-SIM, and it is not possible to convert a micro-SIM (SIM for the iPhone 4) to a nano-SIM.However, the reverse operation is possible.Adaptors exist (or will exist) to convert nano-SIM to the micro or normal SIM formats.p vote 1 down vote. Nope, you'll have to change the SIM card to put it in an iPhone 5. The iPhone 5 uses a new SIM card format called nano-SIM, and it is not possible to convert a micro-SIM (SIM for the iPhone 4) to a nano-SIM.