If your display glass is badly cracked, tape over the glass to contain stray glass and make prying easier.

Reheat the iOpener.

Lay the iOpener across the S6 display. After two minutes, shift the iOpener to the other half of the screen.

You may need to reheat and reapply the iOpener several times to get the phone warm enough. Follow the iOpener instructions to avoid overheating.