Unlocked iPhone 8 Compatibility Guide

Unlocked iPhone 8 Compatibility Guide

The Unlocked iPhone 8 comes in two models for US carriers: A1863 and A1905. There is also model A1906, 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 8 should I buy for my carrier network? We’ll discuss the model differences, carrier compatibility, and help you choose the right iPhone 8 for Verizon, AT&T, T-Mobile, Sprint or your favorite MVNO.

Unlocked iPhone 8: A1863 vs A1905

The A1863 is the GSM+CDMA model and works on pretty much any carrier, including Verizon and Sprint. The A1905 is the GSM-only version, sold as the carrier model for AT&T and T-Mobile, and won’t work fully with CDMA networks.

A1863 A1905
  • Verizon
  • Sprint
  • Ting
  • US Cellular
  • AT&T
  • T-Mobile
  • Cricket
  • International

A1863 models have CDMA support which Verizon and Sprint use for 2G and 3G connectivity. The A1905 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 A1863 model.

Both A1863 and A1905 Just A1863 Just A1905
  • 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 A1863 is sold by Apple as the SIM-free model and is typically used by Apple for replacement devices.

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