Microbiology on Iphone

I’ve finally joined the other people out there who has an iphone and I never looked back. I bought my iphone at the iphone store online. It is a 16 GB 3gs. It is unlocked and cost me $400.00.  That means it works on networks such as Tmobile. Anyway to keep it short, I did purchased a microbiology from the apple store. Now, I have microbiology on the palms of my hand.