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They're currently split, ever so slightly, with the 6s. The AT&T model supports a couple extra bands vs. the Verizon.

• feld 10y ago
  Really? I thought there were only two versions in the US: Sprint and Everything Else
  • xenadu02 10y ago
    That hasn't been true for a while. IIRC The Sprint model of the 6S is a better world phone because it has more bands (including Chinese bands); the current ATT model swaps some of those for the ATT 700mhz bands.
    • rconti 10y ago
      I believe it was true on the 5S but I haven't looked since.
    • jsjohnst 10y ago
      Not true on the 6S. The AT&T model covers more LTE bands (addition of band 30) and has otherwise identical frequency and network support.
  • marcusarmstrong 10y ago
    Per http://www.apple.com/iphone-6s/specs/ http://www.apple.com/iphone-6s/specs/ under "Cellular and Wireless", there are two models of the 6s and the 6s Plus, with the only difference being the presence of LTE Band 30. My understanding was that Band 30 (in the US) is exclusive to AT&T, but I don't know that.
    • shurcooL 10y ago
      A better place to check this information is: https://www.apple.com/iphone/LTE/ https://www.apple.com/iphone/LTE/
• gozur88 10y ago
  It's not just the bands. The 6 is capable of VoLTE, but VoLTE isn't available everywhere on every carrier. So it still has to be able to drop down to 1x, which means CDMA for Verizon, Sprint, and US Cellular, while AT&T and T-Mobile use GSM. You'd think Apple could put out just one model when the 1x networks go away.