Q: Iphone 6+ touch screen not responding

Hi

First consider trying the following steps:

• Back up your iPhone (you may wish to encrypt the backup, if using iTunes), restore it to factory settings (with a fresh copy of iOS) and check whether the issue persists before restoring from backup:
  • How to back up your iPhone, iPad, and iPod touch - Apple Support
  • Use iTunes on your Mac or PC to restore your iPhone, iPad, or iPod to factory settings - Apple Support
  • Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

The steps here may also help:

• If the screen on your iPhone, iPad, or iPod touch doesn't respond to touch - Apple Support

If the issue persists (or if you would prefer to skip directly to this step), contact Apple Support (mail-in service may be available) or make a Genius Bar reservation with a view to having your iPhone checked and, if recommended by Apple, serviced (potentially via chargeable repair service):

• Contact - Official Apple Support
• https://twitter.com/applesupport
• http://www.apple.com/retail/geniusbar/