So I've got a Galaxy A54 and since this morning it won't connect to my home Wi-Fi network anymore. Other people at home are connecting just fine, so it's not the router. I tried forgetting the network and reconnecting, but nothing. What could I do?
Don't make the mistake of wiping all your phone's data hoping that'll fix it - that's a shot in the dark. First check if your router's Wi-Fi is broadcasting both the 2.4 GHz and 5 GHz bands: sometimes the phone gets "stuck" on one and can't see it anymore. Then go to Settings > Apps and force stop the "Wi-Fi System" app (or whatever it's called, depends on your version), wait 30 seconds and restart your phone. If that still doesn't work, manually search for the network and enter the password again - could be a cache issue with the connection record.
Try completely restarting your phone, not just the screen - it often works when Wi-Fi starts acting up. If nothing changes, go into network settings, look for the option to reset Wi-Fi settings (not the whole phone, just those), and then reconnect from scratch. Another thing that's saved me a bunch of times: turn off Bluetooth for a minute while you're connecting, sometimes it interferes. If it still doesn't work, it could be a hardware issue with the Wi-Fi module, but at least with these steps you can rule out software.
If others can connect without any problems, the first step is to completely delete the Wi-Fi network data from your phone - go to Settings > Connections > Wi-Fi, find the network, hold it down and select "Forget". After that, if a full restart of the device (which they've already suggested) didn't fix it, check if there's a system update available, because sometimes a software glitch blocks Wi-Fi right after an update. If that doesn't work either, in Settings > About device verify that the Wi-Fi chip is actually enabled at the hardware level - sounds dumb but it happens.
A trick that people often don't try is logging into your router from the browser (usually you type 192.168.1.1 in the address bar) and checking the list of connected devices - sometimes the Galaxy A54 is still "parked" there even though your phone says it's disconnected, and the router won't release it. In that case you can manually remove it from the list of connected clients, then search for the network from your phone like it's the first time. If your Galaxy keeps saving the password in a weird way, also try going into Settings > Apps > Show system apps, search for "Wi-Fi" and force stop it, then restart your phone - it clears the Wi-Fi module's cache without touching any other data.
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