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AsherN

macrumors 6502a
Original poster
May 11, 2016
612
2,765
Canada
I'm having an issue with WiFi. iPhone 12 Pro. Updated to iOS15 last night. I'm in the office today and I get a lot of WiFi does not have access to the internet. Rebooting the phone fixes it. IP addresses are set properly. Our WiFi is on the same subnet as our wired devices and internet is fine.
 
I think I’m experiencing the same issue. Internet slows down suddenly. All other devices are fine.
 
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my ipad pro updated to ios 15 seems fine. On my iphone what happens (illustrated by a speedtest) is the wifi speedtest shows the download speed initially go to only 15-20 mbps (my wifi is over 500 mbps speed) and then taper down to 0 mbps as the test goes on. Rebooting does not help. I thought I fixed the issue when I manually forgot my wifi in settings and re connected, but now the issue is back and after manually forgetting the wifi and reconnecting again, issue is still there. Wtf apple?
 
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my ipad pro updated to ios 15 seems fine. On my iphone what happens (illustrated by a speedtest) is the wifi speedtest shows the download speed initially go to only 15-20 mbps (my wifi is over 500 mbps speed) and then taper down to 0 mbps as the test goes on. Rebooting does not help. I thought I fixed the issue when I manually forgot my wifi in settings and re connected, but now the issue is back and after manually forgetting the wifi and reconnecting again, issue is still there. Wtf apple?
This was my exact issue on my 12 Pro. I reverted to iOS 14.8. How does a bug like that make it to final release?
 
I too have been having WiFi issues since iOS 15. I configure my device DNS manually, and I noticed when I switched up my DNS servers, things started to work again but then would stop eventually. I wound up disabling Private Address in the WiFi network configuration setup. That did the trick for now. I'll report back if I have another issue.
 
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