How to quickly join Wi-Fi networks in iOS 13
You don't have to close your current app, find the settings app (which may be on other home screens or in a folder), open it, open the Wi-Fi menu, join the network, then close Settings and go back to your app.
No more digging into the Settings menu¡Xyou can join Wi-Fi networks right from the Control Center!
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IMHO, this is the first potentially interesting feature in ANY iOS release (my iPad is still on the iOS it was born with - and which it will remain until/unless something truly _useful_ is added to iOS!).
What's interesting is that, side by side, Android REMAINS on the correct WiFi network forever - while iOS (side by side with Android!!!!!) drops the network frequently!