Hey so I basically bought this phone from someone last year and never had problems with it but I factory reset it because I had issues with apps and now it is locked at a screen that looks like this:
You bought a phone and didn't remove the current iTunes/iCloud account connected? There's no way to bypass this, unless you contact the previous owner mate.
Any time I buy an iPhone from anyone off the classifiieds on facebook or CraigsList I always check iCloud in Settings for an account that's still logged in and for a passcore before I buy.
Try to do that next time, because you're screwed :/