The hardware driver updates are absolutely critical if you want to have a secure phone. The phone has to be within the support window, to get any hardware driver updates. The risk surface of a phone’s hardware is huge, you’ve got the Bluetooth drivers, you’ve got the Wi-Fi drivers, you’ve got the modem drivers, and any other sensors I may have forgotten about.
https://www.youtube.com/watch?v=R4kuIQBkHiw