screen size jumps to about 120%
When I switch on, the screen jumps to a size about 120% and becomes unusable. All finger work won't bring the normal screen size back but it is seen for a fraction of a second when you close the app (any app) Re-booting the ipad didn't help.
(1) What is the cause of this so I don't let it happen again.
(2) How do I get back to normal?
iPad 2, iOS 7.0.3