How to Turn iPhone 6S Keyboard into a Trackpad with 3D Touch
1. Launch any app where you can use the keyboard.
2. Press firmly on the keyboard. This will switch your keyboard into a trackpad.
3. You can now swipe your finger around to move the cursor to easily select and manipulate text, similar to the movement on your computer’s trackpad. You can move your finger around anywhere on the screen, and not just the keyboard area.
4. You can select text by pressing a littler deeper, and move the cursor around if you want to select more text for cutting and copying.