Help! Cant reduce screen size

I have somehow managed to enlarge the size of all icons and pages on the phone. I have tried pinching, double tapping and restarting the phone to no avail. Because text is so large i am unable to read messages and to get to an icon i have to scroll down the page and keep my fingers crossed that it will stop on the right one. To make calls in am having to use the voice control function.

Does anyone have any ideas that i can try to reduce the font/icon/screen size???
I am trying to restore settings via iTunes but as i am currently in Saudi Arabia the download time is ridiculous!