Wi-Fi (802.11 b/g)
4, and 4S:
Wi-Fi (802.11 b/g/n)
5, 5C, and 5S:
Wi-Fi (802.11 a/b/g/n)
6 / 6 Plus, 6S / 6S Plus, 7 / 7 Plus, and SE:
Wi-Fi (802.11 a/b/g/n/ac)

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