Meaning of "It's something all day"

The phrase is from the TV series Mr Robot. Mobley compares Android phone and iPhone:

I mean, if you're talking boot times, then it's Android all day, and if you're talking net speed, Chrome on Android has better HTML5 compliance and runs JavaScript so much faster than Safari.

If it means "Android is way better", then I don't understand etymology.

then it's Android all day, and [...]

means

then it is Android that is the winner all day long, and [...]

Or

then it is Android that would be the winner in a series of tests that we could run during a 24 hour period, and [...]

I think the cited example is a "non-standard" variant of the idiomatic...

I'd vote for Android any day (if we're judging purely on the basis of boot times)
I'd bet on him any day
I'd choose that any day
I'd marry you any day
etc., etc.

There's no particular reference to a day as being 24 hours - in the standard version it simply means always, no matter what day of the week it is, whereas in OP's case it would have to be interpreted as meaning anywhen, no matter what time of day.

Note that this usage isn't quite the same as the more common all day usage found in I could eat ice-cream all day, because that one does (exaggeratedly) allude to the 24-hour duration of a day.