3 Try Landscape Mode
Most of us are accustomed to typing on smartphone keyboards. But it’s hard to deny that, sometimes, the keys themselves can be pretty small. Because of that, it might be worth trying to type in landscape mode to see if it fixes any typing slowness.
Just make sure your Portrait Orientation is unlocked (go to the Control Center). Then, the next time you have the keyboard up, just flip your phone into landscape mode and revel in the extra typing real estate. (If you have iOS 10 or earlier, you’ll need to tap the Keyboard icon in the bottom-right.)