Find my lost device
Activation lock help can not remember password when I set up phone so I can not clear my activation lock
iPhone SE
Question marked as
Here are resources if you are the original owner or can find the original owner:
Help with a lost Apple ID or password:
• "If you forgot your Apple ID" [this is likely an email address you are using or used in the past] click here --> If you forgot your Apple ID email address or phone number - Apple Support
• "If you forgot your Apple ID password" click here --> If you forgot your Apple ID password - Apple Support
Incidentally, as long as the phone can connect to the Internet and get your current password from Apple's servers, the password should be your current password.
Reset device:
Apple can completely reset a device if a person can provide sufficient evidence of valid ownership. This is done online at: Activation Lock support request - https://al-support.apple.com/#/additional-support Apple says, "Proof of ownership documentation is required," but does not provide details as to what is acceptable proof. Prior to this new online service Apple typically required the original receipt* issued by Apple or an Apple Authorized Reseller and documented provenance (so typically it would be the original owner who does this, or a descendant with legal proof of ownership).
*Apple recommends you "Keep your receipt after you buy an Apple device" --> Keep your receipt after you buy an Apple device - Apple Support