Wi-Fi network roaming with 802.11k, 802.11r, and 802.11v on iOS

https://support.apple.com/en-us/HT202628
https://support.apple.com/zh-tw/HT203068

The lists below show which iOS devices support 802.11k, 802.11r, and 802.11v. To use 802.11k and 802.11r, you need iOS 6 or later. To use 802.11v, you need iOS 7 or later. To use adaptive 802.11r, you need iOS 10 or later.

802.11k and r

• iPhone 4s and later
• iPad Pro and later
• iPad Air and later
• iPad mini and later
• iPad (3rd generation) and later
• iPod touch (5th generation) and later

Adaptive 802.11r

• iPhone 6s and later
• iPad Pro and later
• iPad (5th generation)

802.11v

• iPhone 5c, iPhone 5s, and later
• iPad Pro and later
• iPad Air and later
• iPad mini 2 and later
• iPad (5th generation)
• iPod touch (6th generation)