All Verizon Wireless 4G Certified Devices need a Verizon SIM Card to activate Verizon Wireless 4G LTE service. Some 4G LTE devices use a NFC nano SIM card, which is the same size as a regular Nano SIM Card with an additional level of security that protects your personal information. NFC is required to support apps and services, such as the Isis Mobile Wallet. Verizon Wireless 4G LTE Certified NFC 4FF SIM Card is compatible with several Verizon Wireless 4G LTE devices. This product is "nano" sized, and is only compatible with certain models of Verizon cellphones. Contact merchant before purchase to ensure compatibility with your device, as this SIM card is not universal.