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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?
by riobard 5y ago
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?
- becauseiam 5y agoMobile 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.
- jlgaddis 5y agoMostly 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.
- riobard 5y agoSo every cell tower runs an NTP server?