how to unlock actiavation lock from iphon 6

If necessary, if you are the original owner, take the device, the original purchase receipt with the serial number, and a photo ID to the nearest Apple Store.

Genius Bar Reservation and Apple Support Options - Apple. https://www.apple.com/retail/geniusbar/

or contact Apple ID Support. They will need to see the original purchase receipt/paperwork also.

Apple ID - Official Apple Support. https://support.apple.com/apple-id

Contact Apple for help with Apple ID account security - Apple Support. https://support.apple.com/en-us/HT204169

Get Support https://getsupport.apple.com/. Work through the screens to get a chat option.

https://twitter.com/AppleSupport

Or fill out and submit iTunes Store - Contact Us - Official Apple Support https://support.apple.com/en-euro/itunes-contact The form is for iTunes, but it will get passed to the ID Support section.

Enter the required AppleID and password when prompted. If you don’t know those, then you cannot disable activation lock.

Turn off Activation Lock - Apple Support