My iPhone 6 plus "Dial Pad" doesn't work sometimes. It is stuck everytimes. Why?

Howdy Chamara,

Welcome to Apple Support Communities.

If I understand correctly, there's an intermittent issue with the touchscreen not responding when viewing the keypad in Phone app on your iPhone 6 Plus. Try taking a look at the article linked below, it doesn't mention the Phone app specifically, but the troubleshooting tips that it provides should help you resolve this issue.

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

Cheers.

Hey Chamara,

If you haven't already, you can try restoring your iPhone 6 Plus as described here:

Use iTunes to restore your iPhone, iPad, or iPod to factory settings - Apple Support

Ciao.

The touch pad screen will not appear on my 6s. I can only fail numbers if they are in my contacts.