If you want to be technical about it, there could (and probably are given OnePlus’s security history) still be unpatched firmware bugs that will never get patched because OnePlus and Qualcomm have stopped supporting their CPUs which are that old.
Not saying anyone should turn their working phones into e-waste, only that you probably shouldn’t treat it like it’s perfectly secure either just because it’s flashed with the newest Android. Be careful with any super sensitive logins like bank accounts and government sites.
If you want to be technical about it, there could (and probably are given OnePlus’s security history) still be unpatched firmware bugs that will never get patched because OnePlus and Qualcomm have stopped supporting their CPUs which are that old.
Not saying anyone should turn their working phones into e-waste, only that you probably shouldn’t treat it like it’s perfectly secure either just because it’s flashed with the newest Android. Be careful with any super sensitive logins like bank accounts and government sites.