Plug the reader into the computer's USB port, and put the card into the slot at the back of the reader. Then, use the computer to move the data from the card to the computer, as well as to look at which data the card has actually recorded. Remove the old card from the SIM card reader's slot and insert the new card.

This isn't a big obstacle, as the different sizes of SIM cards — full-size SIM, mini-SIM, micro-SIM, and nano-SIM are actually compatible. The only difference between them is the size of the plastic card surrounding the SIM's chip. The actual chip is thesame size between all the SIM cards.

Verizon Wireless, T-Mobile, AT&T, Sprint, U.S. Cellular, Cricket Wireless,  MetoPCS, Ting, Consumer cellular and Boost Mobile.