i forgot my apple id
brought a iphone & cant set up the phone because theres someones apple id on it
iPhone 4s (8GB), brought from someone
brought a iphone & cant set up the phone because theres someones apple id on it
iPhone 4s (8GB), brought from someone
The only thing you can do is return it for a refund or have the someone whose Apple ID it is perform the steps in What to do before selling or giving away your iPhone, iPad, or iPod touch - Apple Support
It is an anti-theft measure and there is no way around it.
See Find My iPhone Activation Lock. If you cannot find the prior owner whose Apple ID is used on the phone, then you have a useless paperweight. If you can get your money back from the vendor.
i forgot my apple id