My AT&T Bill Due/Grace Period Before Late Fees?

Ok it says my bill is due July 13, but late fees will be essed after the 18th. Does that mean I get a little grace period? =D After the 18th it'll be a 1.5% late fee of the total unpaid balance added after the 18th. Don't worry it's paid on time all the time. Just wondering. I'd never pay it 30 days late! That's detrimental to the credit scores... bum bum buuuuum. THANKS!