Q: hello , I have a problem with iphone4, I bought apple device from a person,but when i tryed to install new ios7 i had a issue,the person has locked on icloud and now i cannot finished the installation for my iphone,i have the original box for iphone,help?

Q: hello , I have a problem with iphone4, I bought apple device from a person,but when i tryed to install new ios7 i had a issue,the ... hello , I have a problem with iphone4, I bought apple device from a person,but when i tryed to install new ios7 i had a issue,the person has locked on icloud and now i cannot finished the installation for my iphone,i have the original box for iphone,help? more