Ios15.2.1
Since the update the Wi-Fi icon has disappeared whilst it is still concerted to the internet also when trying to look at the news it reports not connected to the internet
iPhone 5s, iOS 12
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See the following Apple articles:
Connect to Wi-Fi on your iPhone, iPad, or iPod touch
https://support.apple.com/en-us/HT202639
If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network
https://support.apple.com/en-us/HT204051
Recommended settings for Wi-Fi routers and access points
https://support.apple.com/en-us/HT202068
If you need help with your Wi‑Fi password