I heard that the watch on the smartphone is from the carrier, so it's very accurate.
Then is it accurate up to seconds?
I was wondering if there was no error at all.
998 2019-05-17 Gentleman
If you test it on your smartphone, it seems like there's a bit of an error
When I connect to the cellular phone, I synchronize it and match it
After that, it just works as a clock in my cell phone
As a result, errors can occur for up to 2 seconds if they are large
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