Do Iphone 7 Have Sim Cards. The Nano SIM card. Ideally there are three different sizes for a SIM card standard micro and nano.

The Nano SIM card. Contact your carrier for details. This SIM card is built into a phone and can be programmed for uses including as a secondary SIM to let one phone have two phone numbers or phone companies.
These models wont support an Apple SIM card that hasnt been activated.
When you are purchasing a service plan you will be required to purchase a SIM kit. If you cut or modify your SIM card to fit a different device model you may not be able to connect to mobile networks or access certain features using that device. Since not only SIM cards vary in sizes but so too do iPhone SIM styles youll need to know which is the pairing for you. ATT SIM card in iPhone 7plus.

