Your Android-based phone most likely displays the incorrect time.
We learned this nugget from Joshua Topolsky’s interview with the brilliant Neil DeGrasse Tyson on the current episode of On The Verge.
“The iPhone has the correct time unlike the Android-based phones…The bulk of the Androids get their time from GPS satellites. The timekeeping system for GPS satellites was defined up to 1982. And since 1982, 15 leap-seconds have been added to civil time. And those leap-seconds are not included in the Android timekeeping because they’re getting their time directly from GPS, whereas the iPhone compensates for this, puts those 15 seconds back in, and has therefore the correct time. As a result, most Android phones are exactly 15 seconds too fast.”
Skip to 15 minutes, 20 seconds to hear Dr.Tyson explain it himself: