Apparently, the mainstream smart phones all sync the time via some network, probably the cellular provider, every time they lose power and then boot-up again when power has been restored. But in a phone that prides itself on kill switches to prevent spying, maybe this isn’t such a useful method. I want to leave networking turned off most of the time. I would guess that time is likely derived also via GPS signals, which are one-way from space to the earth. You don’t even get pinged. Maybe another option might be to use cell-site paging services to communicate time to the phone. Personal pagers don’t transmit either (if they still exist). I think the idea for time should be to derive time on the phone from a source that doesn’t expect any kind af communications acknowledgement from the Librem 5 but that tells the Librem 5 what time and date it is.
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