How old is the operating system on your actively used devices?

My computer runs Windows 10, my tablet and phone both run Android 10. Phone and tablet are beginning to run up against 'technology creep' (apps dropping support for Android 10).

My phone is 7 years old, tablet about 6 years old. Computer at least 5 years old.

My computer can probably run Windows 11 (but I won't be upgrading it). My phone and tablet cannot be upgraded and will both need to be replaced to run newer versions of Android.