Unlocked iPhone 7 Compatibility Guide

Unlocked iPhone 7 Compatibility Guide



The Unlocked iPhone 7 comes in two models for US carriers: A1660 and A1778. There is also model A1779, but it is intended for Japanese carriers so isn’t considered for this article.

This post is part of our Unlocked iPhone Buyers Guide meant to answer all your questions about buying an unlocked iPhone.

This article will help answer the question: Which unlocked iPhone 7 should I buy for my carrier network? We’ll discuss the model differences, carrier compatibility, and help you choose the right iPhone 7 for Verizon, AT&T, T-Mobile, Sprint or your favorite MVNO.

Unlocked iPhone 7: A1660 vs A1778

The A1660 is the GSM+CDMA model and works on pretty much any carrier, including Verizon and Sprint. The A1778 is the GSM-only version, sold as the carrier model for AT&T and T-Mobile, and won’t work fully with CDMA networks.

A1660 A1778
  • Verizon
  • Sprint
  • Ting
  • US Cellular
  • AT&T
  • T-Mobile
  • Cricket
  • International

A1660 models have CDMA support which Verizon and Sprint use for 2G and 3G connectivity. The A1778 will not support Verizon’s or Sprint’s CDMA networks, so if you want a phone that works on all four carriers, you need to get the A1660 model.

Both A1660 and A1778 Just A1660 Just A1778
  • Band 2
  • Band 4
  • Band 5
  • Band 12
  • Band 13
  • Band 17
  • Band 25
  • Band 26
  • Band 29
  • Band 30
  • Band 41
  • More not mentioned
  • CDMA
  • none

The A1660 is sold by Apple as the SIM-free model and is typically used by Apple for replacement devices.

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