GrapheneOS has an option to restart the phone after a given time without any successful unlock. I have it set to 8 hours, so it reboots every night. Shorter is possible.
A freshly restarted phone is in its safest state. Necessary to input the unlock code, strict minimum required processes running in the background.
“you do need to restart your phone regularly to rid it of demons”
typo: “daemons”, not “demons”.
I’m doubtful. I wanna hear more from security experts.
The bootloader of your phone (if locked) is one of the most secure parts. It’s very hard to get into a modern phones bootloader. In contrast, finding an exploit in a running phone is a lot more feasible.
If a vulnerability was abused to get into your running phone, it will persist until the phone reboots, and the bootloader verifies the core parts of the operating system at startup. In order to persist past a reboot, malware like that would need a vulnerability in the bootloader, or a bypass for its integrity checks.
Alongside that, any background services (“daemons”) that got stuck or became slow over time are forced to restart. Operating system updates can be applied, and working memory is cleared.
In general, it’s just good advice to just reboot your phone once in a while. There’s no harm in doing so.
I use Tasker automation that reminds me to reboot after my phone has been up for awhile. I don’t think I’d like an auto reboot feature. I don’t even like it when I can’t postpone a software update until a time convenient for me.
My iPhone 13 mini‘s battery is so small that I involuntarily restart it at least once every two weeks
iPhone batteries are small in general. My GF’s iPhone se (don’t ask me which gen) barely lasted half a day, and took hours to charge. So a couple of years ago I bought her a Z Flip 3 for her birthday because all the girls in the Korean shows she watches had that phone at the time. Now her battery actually lasts a full day, and the phone charges to full in 45 minutes.
The larger iPhones easily last a day. The SE (any gen) are fairly small and thin and don’t have very large batteries. The 12 and 13 mini are also very small and thus don’t have much battery life. If you have a regular sized iPhone or even a Max, battery life is fine, on the bigger ones good even.
