Q: Why muy iPhone 6s don't have Peek 3D Touch app

Hi Karlagtz,

I understand that you're having trouble utilizing certain aspects of the 3D Touch feature on your iPhone. In such a situation it may be helpful to change the sensitivity of 3D Touch. The article linked below details how to go about doing this.

Change 3D Touch sensitivity on your iPhone 6s or iPhone 6s Plus
https://support.apple.com/en-us/HT205056

Regards!