Anyone know/can clarify when the timing of the the prepay extra's kicks in?
If I buy a $19 value pack, use up the 500MB in 2 weeks, then add a $15 500MB extra, I then have a month to use up that 500MB extra correct? Does it use the 500MB extra first once my $19 value pack renews automatically?
(So all extra's exist for ~30 days after you purchase them, and which data gets used first? The ones that you bought "first"?)