iOS 12 received what is likely to be a final point release, to version 12.5.8, on 26 January 2026. That update was issued to extend the life of specific system services beyond January 2027. Despite this intervention, the platform is obsolete and does not benefit from routine patches, enhancements, or feature development.
TL:DR – I still have an iPhone 5s inherited from a client project. I use it as a backup two factor authentication device for my developer ID. It isn't really useful for much else but whenever I do use it I'm reminded how light it is and how perfect a device it was for the time.
Contents
iOS 12 timeline
| Released | Support ended | Security support ended | Latest release |
| 17 Sep 2018 | 19 Sep 2019 | 23 Jan 2023 | 26 Jan 2026 |
iOS 12.5.8
This last release, 12.5.8, was published on 26 January 2026. Its primary purpose was narrowly scoped: to extend the lifespan of critical security certificates used by core communication services such as iMessage, FaceTime and device activation. This measure ensures continued service availability beyond January 2027.
Updating an iPhone 5s
Just a normal software updare process. Download the update and click Install Now.
I had a verification problem and clicked 'Remind Me Later' the update automatically proceeded overnight.
Job done. No other issues.
Device Compatibility
iOS 12 remains confined to legacy hardware that is incapable of upgrading to later iOS generations.
Supported devices:
- iPhone 5S
- iPhone 6 and 6 Plus
- iPod touch (6th generation)
There is an equivalent iPadOS 12.5.8 software update too
Supported devices:
- iPad Air
- iPad mini 2
- iPad mini 3
End of line
Although a recent update was issued, iOS 12 is formally obsolete. It is excluded from feature updates and security updates. Apple’s established lifecycle policy provides limited, time-bound support for ageing operating systems, and iOS 12 is entirely out of support.
Conclusion
Devices running iOS 12 should be updated to version 12.5.8 to preserve access to essential services. This is a pragmatic stopgap, not a long-term strategy. For improved security, ongoing compatibility, and access to modern capabilities, migration to newer hardware capable of running current iOS releases is strongly recommended. But if you've got one of these devices and it still plays a part in your world, then why not keep it till it fails, which may be a very long time from now.
