a4 printing on ipad (4th gen) with airprint
my wife's ipad will only print 1/4 size on a4 paper and cannot find a way of making full a4 page prints!😕
iPad (4th gen) Wi-Fi
If you are using HP printer, you can try and use this app to control image and paper size.
https://itunes.apple.com/sg/app/hp-all-in-one-printer-remote/id469284907?mt=8