I bought an iphone 4s second hand but the owner don't remember their icloud password to activate it, please i need it up and running, how do i remove that account to use mine to activate it?

You can’t remove that account, and Apple won’t do so for you; tell the previous owner to use Apple’s iForgot service.

(131039)

Hi if he can't do that get your money back

You cannot use iPhone when it tied to another Apple ID

Iphone could be lost/stolen.

Cheers

Brian uk

You need to contact the seller and ask him to remove this iPhone from his list of devices. Otherwise, your iPhone will be a useless brick.

Find My iPhone Activation Lock: Removing a device from a previous owner’s account - Apple Support