I am locked out of my iPhone, must have happened while in my pocket. What can I do to get it working again?

If you've forgotten or misplaced your passcode, your ONLY option is to reset (erase) the device and restore it from a backup.

You will need your AppleID credentials.

Follow these instructions:

How to reset your iPhone, iPad or iPod touch if you've forgotten your passcode – Apple Support (AU)

Note: If your device is running iOS prior to 15.2, you’ll ADDITIONALLY need a cable and a computer to follow the additional instructions linked near the bottom of the article.

If it is Passcode locked, you will need to follow the instructions in the blue link above your name on this page. If it is Activation Lock, see this link...

How to remove Activation Lock - Apple Support