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Forum Discussion
Firmware 12.1.11.10 iPhone disconnects
After quite a good run with the previous firmware, this update is causing issues again with at least my iPhone. It randomly disconnects and most times I can toggle the WIFI on the phone a few times and get it back or sometimes I have to reboot the router.
Anyone else seeing anything quirky with this update?
11 Replies
What iOS is on the iPhone?
How was the system updated? Manually or Automatic Update?
Is IPv6 enabled on the RBR?
What channels are you using? I've been using 1 and 40 and now 11 and 48. No issues seen with my iPhone keeping connected to the RBR. Im now using a 3rd party IPv6 service since my ISP doesn't support native IPv6. Been working good so far.
iOS 26.6 on an iPhone 17 Pro
I updated via the app and it seemed to go smoothly - all the devices showed the correct FW. I have made no changes to the setup other than that update.IPv6 is on the router. Channels are 11 and 36.
I have the IoT set to 2.4 GHz and 5 GHz WPA2-PSK and my phone is happy with that and connects OK.It's the main network that is flakey using WPA3-Personal. For example, right now my phone shows it as connected to the SSID, but the WIFI status at the top of the phone shows no network, only LTE. Yet, my iPad sitting next to the phone is connected to the same main SSID and has no problems. The phone is apparently connected to the router and the iPad to one of the satellites if the connection information is correct.
So, the phone can connect to the SSID but then acts like it has no WIFI even though is shows as connected to the SSID. Power cycling the phone does no good. Rebooting the router fixes it for a while and then the problem recurs. Or, toggling OFF Wi-Fi 6E Mode on the iPhone - not what I want to do. Or sometimes doing nothing but toggling between the two SSIDs (main and IoT) fixes it for a while. I'd say it's random, but that just means I don't know what is causing it yet, so it seems random.
I have not had time to do much troubleshooting and am not sure where to look, other than going back to the previous firmware that had been fine.What happens if you disable IPv6?
Set channels 1 and 40 or 11 and 48?
Set main WLAN network to use mixed WPA2 and WPA3.
Private WiFi Address set to fixed or disabled?
My router is using Channels 11 and 48.
Mixed WPA mode
Iphone 17 Pro Max iOS 26.5.2
Private WiFi Address set to fixed.
Mine was updated via AU using the web ui, then powered OFF then back ON. No factory reset.
I will give each of these a try, one at a time, and see if anything improves over the next few days...
Starting with mixed WPA2 and WPA3
If you set WPA3 only on the main WLAN, then if you have other devices that don't support WPA3, those won't connect. Why Mixed WPA mode is preferred on the Main WLAN.
Let us know how it goes.
Interesting results so far...
so far, no more disconnects on the iPhone 17 Pro after enabling WPA2 and WPA3 on the WiFi 7 main SSID. It's only been 24 hours but looks promising. But why? And why did I choose that as my first thing to try? Gut feeling? But I'd been using WPA3 only on that SSID for months with the previous firmware and possibly longer - no idea how long, really. I'll give it a few more days, and if solid, will flip it back to verify.
There are still some bad behaviors with IPv6 and Apple devices using WiFi7 that NG is aware of.
Thought that was going to be the solution - guess not :(
Not sure which to try next...channels or IPV6... not optimistic about either.
Disable IPv6. And try manual channels 1 and 40. I'm currently using 1 and 40 here and iphone keeps connected on wifi.
trying ch 11 & 40 - I have a tool that shows the most open space and those should be good, although no reason the existing 11 & 36 would be bad either - both combinations look wide open.
if this doesn't help, and I can't imagine a good reason that it will, I'll try the IPV6 thing next...let us know here. I did updated to iOS 26.6 on mine the other day. Have not see any odd issues yet. IPv6 still enabled on my 971. Channels 11 and 48 currently.
