4 ms·
Except that my iphone is usually off by a few minutes. I don't think Apple got their NTP implementation or usage quite right.
by Confusion 14y ago
Except that my iphone is usually off by a few minutes. I don't think Apple got their NTP implementation or usage quite right.
- keeperofdakeys 14y agoMost mobile phones usually get their time from the phone towers. Of course, this relies on them having the right time. Interestingly the most effective way to get syncronised clocks is GPS.
- anrope 14y agoI'm pretty sure cell towers all use gps for time synchronization, which is necessary for the network to work. I always trust my cell phone time.
- Dylan16807 14y agoCell towers need synchronized clocks? For what?
- tonyarkles 14y agoI'm pretty certain that CDMA towers, at least, had exceptionally accurate clocks for something related to the technology (synchronizing the chip code maybe? it's a guess). Not sure if this applies to GSM as well, but CDMA used to be an acceptable clock source for a Statum 0 clock source.