When trying to share internet from an iPhone 8 (iOS 15.5) to an iPhone 5 (iOS 10) using WiFi, the latter always fails to connect with a could not connect to the network "iPhone 8"
.
The iPhone 5 clearly sees the network, but invariably fails to connect a dozen times in a row. I have not mistyped the password every single time.
Meanwhile, multiple other devices that aren't even 5 GHz capable have no trouble connecting.
What could be the issue?