Is the smartphone clock accurate up to seconds?

smartphone clock

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.

1000 2019-05-17 Gentleman

A. 1

If you test it on your smartphone, it seems like there's a bit of an error

Gentleman 6 years ago 0

A. 2

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

Gentleman 6 years ago 0

A. 3

Thank you for the detailed explanation

Gentleman 6 years ago 0

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