Well I updated to 14.0.1 last night it is now the next morning and I am still logged in to my WiFi so far. No problems here... at least not yet :) iPhone XR.
kingkeosha
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There’s another new update IOS 14.0.1. Took my phone a good minute to update though. Not sure if this fixes the issue of kicking me off the WIFI service, but we shall see!