iphone not connecting to 802.11ac

[rlaudiano]

any idea why iphones and ipads are not connecting to 802.11ac? it is always connecting to 802.11n. even if i turn-off wifi off and then on, it is sticking with N. anyway i can configure the controller to allow these devices to always connect to AC?

2504 WLC 8.5, 3602i with AC modules

[superego]

Can you do a separate SSID for VOIP and non-VOIP(byod)?

Apply band-select on WLAN of non-VOIP to prefer 5ghz

Don't apply band-select on VOIP WLAN, if you prefer 5ghz, just enable 5ghz radio in WLAN instead of all.

https://community.cisco.com/t5/wireless-mobility-documents/load-balancing-and-band-select-on-the-cisco-wireless-lan/ta-p/3128513#toc-hId--1894160999

HTH, please rate this post if helpful.