RGK852 Force iPhone to 2.4ghz

Please post about this in the Orbi AX forum for your model Orbi:

https://community.netgear.com/t5/Orbi-AX/bd-p/en-home-orbi-ax

Thank you, 

Try turning down the power output of the RBRs wifi 5Ghz radio from 100% to 25% and see if this changes anything. Under Advanced Tab/Advanced Settings/Wireless Settings