How do I unlock my iPhone 11?

Carrier Lock or Activation Lock?

Carrier Lock:- Though your iPhone’s original Carrier is not obligatory to unlock your iPhone, but you may know the process here --> How to unlock your iPhone for use with a different carrier ...

If you are the owner of the iPhone or the owner has shared all information with you then to open Activation Lock:- If it is Activation locked, read here --> Turn off Activation Lock - Apple Support Activation Lock for iPhone, iPad, and iPod touch - Apple Support

Learn how to remove a device from a previous owner's account.

If you are not the owner of the iPhone and do not have the Apple ID and Password then there is no way that you can get into this iPhone unless the original owner shares the Apple ID and password to you. If you are lucky you can get into this iPhone if they (owner) accidentally remove the device from their apple ID.

Locked how? There are multiple kinds.

• Device disabled message or forgot passcode —>If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support
• SIM locked to a carrier: Contact the carrier it is locked to and ask about their unlocking policy—>How to unlock your iPhone for use with a different carrier - Apple Support
• SIM PIN lock—>Contact your carrier for the SIM PUK code
• Apple ID locked—>If your Apple ID is locked or disabled - Apple Support
• Device Activation Locked—>Turn off Activation Lock - Apple Support