your smart phone cant do that?
LOL welcome to RIU. you will get TONS of help/advice from alot of members here, looks at the F.A.Q tab, all is in there, its the growers bible.
you will not be able to tell the sex of your plants till 5-14 of flowering the plant, so from the sounds of it may happen anyday. look for little clusters of balls = male, you will see them. What you want is little white hairs comming out of the shoots and tops, then its a fem. good luck