IPhone 5 locked to iCloud account?
I found an AT&T iPhone 5 in the street last week. Before inquiring about it, i stupidly restored the phone & now it's stuck on the activation lock screen asking for the previous owner's iCloud email & password. Considering there's no way around the activation lock right now, i was wondering what my alternative options are, or if anyone can give me some info. Also, please keep your "try to find the owner of the phone", "you're a bad person" comments off this topic, not tryna hear all that lol. I'm not sure which one of these is the correct one, but i heard that my only option would be to swap out either the logic board or the motherboard with a new one that isn't locked to an iCloud account. Also, if i do end up doing that. Like i said the phone is AT&T. I wanna use the phone for TMobile. If i swap for a new logic/mother board, could i get one from a TMobile iPhone 5 & be able to use the phone for TMobile, or would i have to get a usable AT&T one & then get the phone unlocked?
So basically to sum up what i just said. I have an AT&T iPhone 5 locked to iCloud. I wanna know if i have to swap the logic board or motherboard to make it work. Which specific one i have to get. & if i would be able to get a TMobile logic/mother board to make the phone work for TMobile or if i have to get the correct one for the AT&T phone & then get it unlocked to use it for TMobile. Any help is appreciated!