Perhaps the most important thing in the IT world is that once a device is purchased, it is properly supported, especially in terms of security. The recent story of the winged seahorse fish illustrates this.
Security updates do not always protect you, but they significantly reduce the attack surface, because once all patches are installed, only the so-called zero-day, i.e. undiscovered vulnerabilities, can be a problem.
But these are difficult to detect, and hopefully the good guys and gals will find the bug first, rather than the cybercriminals.
Xiaomi is not always very good at updates, but it certainly delivers security patches. Here's a list of how often you can expect them:
Monthly security patches
Xiaomi:
Mi A3
Mi A2
Mi A2 Lite
Quarterly security patches
Xiaomi:
Mi 10T Pro
Mi 10T
Mi 10T Lite
Mi 10i
Mi 9T Pro
Mi PLAY
Wed 10
Mi 10 Lite 5G
Mi 10 Pro
Wed 9
Mi 9 Lite
Mi 9 SE
Mi 9T
Mi 9T Pro
Mi A3
Mi Note 10
Mi Note 10 Lite
Mi MIX 3
Mi 11 Lite 5G
Mi 11 Ultra
Redmi:
Redmi 7A
Redmi Go
Redmi Note 7
Redmi Note 7S
Redmi Note 7 Pro
Redmi 10X 4G
Redmi 7
Redmi 8
Redmi 8A
Redmi 8A Dual
Redmi 8A Pro
Redmi 9
Redmi 9 Prime
Redmi 9A
Redmi 9AT
Redmi 9i
Redmi 9C
Redmi 9T
Redmi 9C NFC
Redmi Go
Redmi K20
Redmi K20 Pro
Redmi Note 8
Redmi Note 8 Pro
Redmi Note 8T
Redmi Note 9
Redmi Note 9 Pro Max
Redmi Note 9S
Redmi Note 10 5G
Redmi Note 10 Pro
Redmi Note 10S
Redmi Note 10T 5G
Redmi Note 10 Pro Max
POCO:
POCO C3
POCO F2 Pro
POCO M2
POCO M2 PRo
POCO X2
POCO X3
POCO X3 NFC
source: XDA/Xiaomi
Not too surprising: there are the Mi A phones (which are no longer available, I talked about it here), and there is everyone else. This is because of the Android One program, which is all about security and a clean Android experience. These phones come with the same factory Android found on Google Pixels, no MIUI, and only a few Xiaomi apps.
For Android Enterprise recommended phones, we also find out how long they get updates - and it's pretty good:
Name of the phone
Security updates
Android system updates
Publication date
Security updates end date
Redmi Note 9 Pro
End of security updates: 2023 May Update frequency: every 90 days
This is Android 10 This is what you will get: Android 11
2020-5
2023-5
Redmi 9
Security updates end: Jun. 2023 Update frequency: every 90 days
This is Android 10 This is what you will get: Android 11
2020-6
2023-6
Mi 10T Lite
Security updates end: oct 2023 Update frequency: every 90 days
This is Android 10 This is what you will get: Android 11
2020-10
2023-10
Mi 10T
Security updates end: oct 2023 Update frequency: every 90 days
This is Android 10 This is what you will get: Android 11
2020-10
2023-10
Mi 10T Pro
Security updates end: oct 2023 Update frequency: every 90 days
This is Android 10 This is what you will get: Android 11
2020-10
2023-10
Redmi Note 10 5G
Security updates end Apr 2024 Update frequency: every 90 days
This is Android 11 This is what you will get: Android 12
2021-4
2024-4
Redmi Note 10 Pro
Security updates end: Mar. 2024 Update frequency: every 90 days
This is Android 11 This is what you will get: Android 12
2021-3
2024-3
Redmi Note 10S
Security updates end: Mar. 2024 Update frequency: every 90 days
This is Android 11 This is what you will get: Android 12
2021-4
2024-4
Mi 11 Lite 5G
Security updates end Apr 2024 Update frequency: every 90 days
This is Android 11 This is what you will get: Android 12
2021-4
2024-4
Mi 11 Ultra
Security updates end Apr 2024 Update frequency: every 90 days
This is Android 11 This is what you will get: Android 12
2021-4
2024-4
Redmi 9T
End of security updates: dec. 2020 Update frequency: every 90 days
This is Android 11 This is what you will get: Android 12
2020-12
2023-12
Redmi Note 10T 5G
Security updates end Apr 2024 Update frequency: every 90 days
This is Android 11 This is what you will get: Android 12
2021-4
2024-4
Redmi Note 10 Pro Max
Security updates end: Mar. 2024 Update frequency: every 90 days
This is Android 11 This is what you will get: Android 12
2021-3
2024-3
source: xiaomi
So you can see that if you choose the Android Enterprise recommended device, you are guaranteed updates for several years. It's worth thinking about this when you buy, because we live in an age where anyone can be a target, and where tools previously unimaginable to cybercriminals are available.