Getting network time without data service

I’m wondering if it is possible to get the time from the cellular network without having to have cellular service.

This would of course be with an electron.


Hm, I wouldn’t think so…the idea of “having service” Is having a valid connection to a cellular tower, so if there’s any communication between the node and the tower then you should have a connection to the Internet.

Maybe I’m missing something, though. @BDub @Mohit?

Hi @c0t0d0s0 There is no way to do this without some sort of connection to GPS (with a GPS receiver) or internet connection (which requires a cellular connection). If you just want to maintain time after a connection though, you can use the RTC on the STM32 and make sure you provide a backup battery on VBAT in case of total loss of power.