Resolved issue with WI-FI on iOS 14.2 by changing DNS Servers:
Yesterday out of nowhere my iPhones and iPads with iOS 14.2 wouldn't load any data (in apps and browsers) on the home wifi. I had no issues with any other devices on the network.
After reseting and rebooting every piece of hardware possible without success I finally resolve the issue by changing the DNS servers.
This can be done in the router settings or simply on the iOS device in WI-FI Settings then in the connected network under DNS > Configure DNS > Manual. I used 8.8.8.8 and 8.8.4.4 (Google Public DNS)
sylverbear
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