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How to Fix Xiaomi Phone Auto-Brightness Not Working

A Xiaomi phone that keeps asking for the Mi Account password usually has a sync error, failed verification, an outdated system app, or a Mi account bug after a reset, update, or network change. The most reliable fix is to confirm the correct Mi Account, reconnect to a stable network, remove temporary account sync errors, and update Xiaomi system apps before attempting sign-in again.

Steps
  1. Confirm the correct Mi Account details.

    Sign in to the Mi Account from another device or browser first. Reset the password if sign-in fails, then wait a few minutes before entering the new password on the Xiaomi phone.

  2. Reconnect using a stable internet connection.

    Switch between Wi-Fi and mobile data. Disable VPN, private DNS, or ad-blocking apps that may interrupt account verification Xiaomi services require.

  3. Restart the phone and clear system app cache.

    Restart the device, then clear cache for Xiaomi Account, Security, and Google Play Services if accessible. Cached sign-in data often causes a Xiaomi Mi account password loop.

  4. Check date, time, and software updates.

    Enable automatic date and time. Install available MIUI, HyperOS, and system app updates, since expired tokens or outdated account services can trigger repeated password prompts.

  5. Sign out and sign back in if the phone is already unlocked.

    Remove the Mi Account from account settings only if the original credentials are known. Add the account again after restart to refresh account authentication.

Common Issues and Fixes
  • Repeated password prompt after a reset: likely cause is activation lock or incomplete account verification; fix by signing in with the previously linked Mi Account and waiting for Xiaomi servers to sync.
  • Correct password is rejected: likely cause is a recent password change not yet synced; fix by waiting 5–15 minutes, restarting the phone, and trying again on a stable network.
  • Loop starts after MIUI or HyperOS update: likely cause is a Mi account bug in system apps; fix by updating Xiaomi Account, Security, and device firmware.
  • Prompt appears only on Wi-Fi: likely cause is router DNS filtering, VPN, or captive portal issue; fix by testing mobile data or another Wi-Fi network.
  • Phone asks for password even after successful login: likely cause is corrupted sync data; fix by clearing account-related app cache and re-adding the account.
Issue Comparison
Situation Likely Cause What to Do Result
Password prompt after reset Activation lock or incomplete verification Sign in with the previously linked Mi Account and wait for server sync Restores account verification if the correct account is used
Correct password rejected Recent password change not fully synced Wait 5–15 minutes, restart the phone, and retry on a stable connection Allows Xiaomi servers time to update authentication
Loop after MIUI or HyperOS update Bug in Xiaomi account-related system apps Update Xiaomi Account, Security, and device firmware Fixes outdated or broken account components
Prompt appears only on Wi-Fi Router DNS filtering, VPN, or captive portal issue Test mobile data or another Wi-Fi network Confirms whether the network is blocking verification
Prompt continues after successful login Corrupted sync data Clear account-related app cache and re-add the account Refreshes local authentication data
Quick Tips
🤔Note:

A factory reset usually does not remove Mi account verification if Find Device was previously enabled. Second-hand devices may remain locked to the previous owner’s Mi Account until the account is removed from Xiaomi servers.

💡Protip:

Too many failed attempts can temporarily delay login acceptance even when the password is correct. If the phone cannot pass the activation screen, local cache clearing may not be available, so account recovery becomes the main path.

Related Questions
Can a Xiaomi phone be used without the Mi Account password?

Not if the device is activation-locked to an existing Mi Account. The original linked account must be verified first.

Why does the Xiaomi phone keep asking for the password after reset?

A reset can trigger account verification again. The phone checks whether the device is still tied to a Mi Account before full access is restored.

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