I was trying to jailbreak and restored it by accident. I don't have an at&t micro sim, not even a sim. All I have is my T-Mobile SIM which I cut down to micro size. Version is 4.3.5, how can I activate it? I'm utterly mad and annoyed right now.
You won't be able to activate it without an AT&T microsim.
You could hactivate it by jb it but if you do that on 4.3.5 you will be stuck with a tethered boot.
Or buy an AT&T microsim on eBay for $1-2.
Even inactive or any kind of AT&T sim will do the trick and will let you into the home screen.