Sep 15, 2021
I have a phone "Redmi Note 9" which has Android Version 10 on it. Although I checked everywhere for an Android update (and updated apps via "Google Play" and "System apps updater" as far as it goes) I do not see an update for a newer Android version anywhere. Is there some hidden setting to update to a newer Android version, or how can I do this?
I think you can only get the latest update through a custom ROM or manually upgrading your device. It is important to note that it can be a complex and potentially risky process that can damage your device.
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which redmi note 9 do you have? the 4G version? what is your model number?

i do not have your phone and i see that there is a Redmi Note 9 and a Redmi Note 9 4G. just the note 9 can be upgraded to android 11 while the note 9 4G can be upgraded to android 12.

and as @Dannydet suggested updates will depend on your carrier and manufacturer. if you know your exact model of the phone, you can do a search and see if there is a firmware update available for your phone. keep in mind that firmware updates are very device specific and installing the wrong firmware can have seriously bad consequences.