Thank you for your time and consideration Demo...
By resetting the device - I mean in the sense of holding the home button and on button to reboot.
A strange thing has happened. I don't understand it but here are my findings.
These keyboard issues have been plaguing me all day. I need to use keyboard shortcuts constantly and Safari has been jammed up and pretty much unusable. Chrome was working better but still not happy.
I decided that before following all your advice and then resetting all settings as a first step that I would back the device up to my i cloud. incidentally the device was connected to my desktop and logged into ITunes.
After making the back up I used my mobile to make a short film of my keyboard shortcuts - there are loads and losing them was an issue for me but I was willing to swallow it in order to get going again. At this point I added a new single Keyboard shortcut to test.
I made a last minute check in Safari to see if the keyboard was still poggered and test the new keyboard short cut.
Lo and behold. Keyboard is working in Safari and my shortcuts too. It's still laggy but working at least.
Safari however did hang itself twice and returned me to the home screen- it's not perfect but a step in the right direction.
All I did was back up the device to Icloud?
Odd but true
Safari however has