iPhone 12 Pro supported wifi channel

Thanks for getting back to us, Alvin.H. It’s appreciated.

While your’s and your wife’s iPhone 12 Pro/iPhone 12 Pro Max should be able to connect with those channels, we recommend contacting Apple Support for a deeper look.

Depending on your location, you may be able to reach them using this link: Get Support -- Choose Connectivity > Unable to connect to WiFi > Skip to reach them.

If you’re not able to use the Get Support link in your area, you can give Apple Support a call: Contact Apple for support and service - Apple Support

Thanks for using Apple Support Communities!

Hey Alvin.H,

It appears that you're wondering if your iPhone 12 Pro can use channels 44, 46 or 48 on a 5Ghz signal. You iPad works fine on channel 44, but your iPhone doesn't see it, and we're glad to provide assistance.

Recommended settings for Wi-Fi routers and access points - Apple Support -- Review the information in this section of this article. Your iPhone may not be seeing the channels because of interference. If you're having a problem with your home Wi-Fi network, make sure your router is using these recommended settings. If you don't manage your home's Wi-Fi network, as the one who does, or contact your ISP or router manufacturer for help.

Resolve Wi-Fi and Bluetooth issues caused by wireless interference - Apple Support -- Also, make sure that nothings interfering with your iPhone connecting to those channels.

Feel free to get back to us with any questions or problems you may have.

All the best.