Open-sourcing a more precise time appliance

Re:Open-sourcing a more precise time appliance by riobard on Wednesday August 11, 2021 @02:53PM (#28146097)

Do smartphones get their time from GPS?

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Re:Open-sourcing a more precise time appliance by kube-system on Wednesday August 11, 2021 @03:01PM (#28146211)

I believe they usually get it from the network.

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Re:Open-sourcing a more precise time appliance by riobard on Wednesday August 11, 2021 @03:28PM (#28146558)

That was my impression as well but now I’m puzzled about why. Since most smartphones have GPS builtin why not get time from GPS?

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Re:Open-sourcing a more precise time appliance by becauseiam on Wednesday August 11, 2021 @03:36PM (#28146664)

Mobile basebands already get the local time and UTC offset when connecting to a tower, there's no need to power up the GPS antenna and receiver separately.

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Re:Open-sourcing a more precise time appliance by jlgaddis on Wednesday August 11, 2021 @05:18PM (#28147903)

Mostly because 1) your phone is getting time from the tower anyways (they have to be closely sync'd) and 2) GPS doesn't always work very well -- especially indoors.

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Re:Open-sourcing a more precise time appliance by riobard on Sunday August 15, 2021 @02:33PM (#28191157)

So every cell tower runs an NTP server?

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