Need help to stop iPhone from changing iPad's WiFi network

[electronicsguy]

Hi, I am having a problem I need some help with. I have a Wi-Fi modem in my living room that covers one side of the house and I have a Wi-Fi extender in the family room that covers the other side of the one because the signal is to weak if you are in the family room and hooked to the main modem. The problem is if we are using the iPad in the family room and hooked to the "Extender" and I take my iPhone in the living room and hooked up to the "Main modem" the iPad also switches and hooked up to the "Main modem". How do you stop the iPhone from changing iPad Wi-Fi network as well when you move the iPhone and hook up to a different Wi-Fi network.

You could use access control lists on the router, if possible. Block out the iphone on one of them, and the ipad on the other based on their unique MAC addresses. THen you won't have to play around without icloud keychains.

 

[aces99]

You could use access control lists on the router, if possible. Block out the iphone on one of them, and the ipad on the other based on their unique MAC addresses. THen you won't have to play around without icloud keychains.

What I did was I unhooked the extender I got from my ISP and I also disabled the router part from the ISP's router/modem as well. Then I hooked up my ASUS dual band router that has 2.4Ghz and 5Ghz and have all my devices hooked up to just that router. Can I do what you said but with just the dual band router. Can I set the router up so my iPhone can hook up to both the 2.4GHZ and 5GHZ band but my iPad can only hook to the 5Ghz and not the 2.4Ghz? Or can what you said only work if the modem/router and extender are separate devices? If I could do what you said with just the dual band router that would be awesome.

Edit: I went into my ASUS router settings on the routers website and found an option to block internet access for individual devices. But it looks like it will block access to the iPad completely, from the 2.4Ghz and 5G bands. I just want to block the iPad from the 2.4Ghz band. Am I missing something and is there an option to just block it from the 2.4Ghz band? Or is it all or nothing?