Why is the clock on my son's AT&T Samsung phone always 2 minutes fast?

Episode 1529 (2:02:11)

Roger from Upland, CA
Samsung Galaxy S9

Roger's son has a Samsung phone on AT&T, and the clock is always 2 minutes fast. His wife, who has a very similar Samsung phone on the same carrier, keeps perfect time. Leo says there is a setting for Apple Watch where the time could be offset, so there could be a setting for that. Samsung is notorious for putting in a lot of settings, so he should check the date and time settings.