Wifi keeps disconnecting "password incorrect"

Pxrnflakes Said:

Wifi keeps disconnecting 'password incorrect': My iPhone 12 Pro Max keeps disconnecting from the wifi since 2-3 months or so. Often when I then want to reconnect to my network I get the notification 'incorrect password for …' while the password is correct. Sometimes it helps if I turn my wifi on and off but after 20-30 minutes it happens again.[...]

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Troubleshoot the iPhone's WiFi:

A. Restart the Router:

If there is no Wi-Fi signal, then apparently you have no IP address. So, start by restarting the router.

B. Clear Temporary Internet Files:

If connecting is unsuccessful, try clearing out your Temporary Internet Files: History, Cache, and Cookies

Go Here: Clear your Safari Browser History and Set Up Content Blockers on your iPhone, iPad, or iPod touch - Apple Support

C. Try manually restarting your iPhone:

1. Go To: Settings
2. Select: General
3. Scroll to: the Very Bottom
4. Select: Shut Down
5. Slide Finger: to the Right
6. Wait: 30 Seconds
7. Power One: the iPhone
8. Try this Once More

D. Troubleshooting Connectivity:

Wi-Fi: If your iPhone won’t Connect to a Wi-Fi Network - Apple Support

E. Disable, then Enable WiFi:

In Settings, try disabling Bluetooth, and then reenabling Bluetooth, seeing if that makes all the difference.

F. Reset All Network Settings to Default:

Example of items that will be reset: (Wi-Fi Passwords, VPN Connections, etc)

1. Go To: Settings
2. Tap: General
3. Tap: Reset
4. Tap: Reset Network Settings.
5. Enter: [Your Passcode]

As a Last Resort:

F. Restore form a Backup:

Have a backup of your iPhone? If you are not concerned with losing data, then restore your iPhone from a backup that was made when Wi-Fi was working. Prior to restoring, always know to backup your iPhone, incase anything goes wrong in the future.

Pxrnflakes Said:

"Thanks but as I’ve mentioned I tried all the possible “solutions” that are out there & more..: I also did not think to find an answer to the problem here. The main question was the warranty one, do these kinds of defects fall under this?"

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Get this Serviced:

I. Perhaps this is a Faulty Device?:

How old is this? If this is covered under AppleCare Plus warranty, then maybe you can get it serviced free of charge, being it is found to be a faulty device. You have a one-year, out-of-the-box, limited-wattanty with this too. So, if any of that applies, and if found to be a faulty device, then it might be free-of-charge. In all, that would be Apple's call.

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