How To Use A Sim Card In A Different Phone. An empty SIM card or wafer is available on the Internet. If a CDMA carrier provides your first SIM your second SIM wont support CDMA.

Tap more settings followed by text messages. Enter the requested info and follow the prompts to update your account with your new SIM card and IMEI number. Tap on OK to confirm your selection when a confirmation shows up on the screen on your new phone.
If it is a nano-SIM card and your iPhone is carrier unlocked then simply insert it into your iPhone.
You get this convenience on one device because it has two separate SIMs. You will be asked to choose which contacts you want to transfer to phone. On the next window it states view message on sim card just like on the picture below. Restore your iPhone or iPad to factory settings.
