Hey there, dirtdiver391.
I see that your keyboard isn't acting as expected after updating your iPhone 7. I'll be happy to help.
Restart your iPhone, iPad, or iPod touch -- Once your phone returns to the Home screen, test.
About the keyboards on your iPhone, iPad, or iPod touch -- If you're using a 3rd party keyboard, select the built-in keyboard on your device.
If the screen on your iPhone, iPad, or iPod touch doesn‘t respond to touch -- If the above steps haven't resolved the issue, then it's could be an issue with the touchscreen.
Let me know how that goes and thanks for using Apple Support Communities!