How does network connectivity affect 'auth error unknown' messages on an iPhone?

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Grade: Education Subject: Support
How does network connectivity affect 'auth error unknown' messages on an iPhone?
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A weak or unstable network connection can prevent your iPhone from properly authenticating with Apple's servers or the service you're trying to use. Ensure you have a strong Wi-Fi signal or a stable cellular data connection. Try switching between Wi-Fi and cellular data to see if that resolves the issue. Resetting your network settings (Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings) can also help.