I have bought a second hand iPhone 6s which is locked to an account which I don,t have the password for,how can I clear the account

J0NOPLUs wrote:

I bought a second hand iPhone 6s & found it is locked to an iCloud account,how can I clear the account as I don,t have the password

https://support.apple.com/en-ca/HT201441

You can’t remove an activation lock without the help of the person who set it up. If you don’t know that information, then you will never be able to use that phone. If possible, return it for a refund and buy a phone that you can use.