Q: i cant slide to unlock mu iphone 6 plus

Hello my vodafone,
 

Thanks for visiting Apple Support Communities. 
 

If you can't slide to unlock your iPhone 6 Plus, first force it to restart:
 

To force restart your device, press and hold both the Sleep/Wake and Home buttons for at least ten seconds, until you see the Apple logo.

-Restart your iPhone, iPad, or iPod touch

If the same thing happens after your iPhone restarts, try the other troubleshooting tips in If the screen on your iPhone, iPad, or iPod touch doesn't respond to touch.

Best Regards.