QCM6490 is their long term support chip (8 years), the product was released in 2021. That means we have until 2028 for security updates.
UPDATE: 2028 is the official support timeline from Qualcomm.
The fairphone five releases in 2023, claims 10 years of updates until 2033.
There is a 6 year gap in Qualcomms QCM6490 support window and FairPhones support window. Baseband security will get abandoned with 6 years left on the clock. Rough.
I think this is exactly the problem that caused GrapheneOS to initially reject the earlier fair phones.
https://www.qualcomm.com/products/internet-of-things/industrial/building-enterprise/qcm6490
"Long term support for Android OS upgrades, Linux, Ubuntu, Windows 11 IoT Enterprise, security updates and enterprise grade hardware."
Updated Reference: https://arstechnica.com/gadgets/2023/08/fairphone-5-sets-a-new-standard-with-8-10-years-of-android-support/