I've always been a bit scared of those wall hangers ,reckon I might not locate it properly or come home to find the Mrs has wallpapered the lounge and left it up
Definitely want to make sure you mount to a stud. Don't trust drywall anchors one bit. Screw HAS to be in a wood stud for me to hang my bass from.
My iPad is antique and won't allow me to reduce my pictures, it's also an iPad and therefore as much good as an ash tray on a motor bike
Even on an old bit of kit id be surprised if you didn't have an option to adjust the cameras setting to 4 or a photo editing option lurking somewhere ,but dunno never had an Apple devices
The only other option would be a photobucket or something similar that you could upload to and then post your pics that way ,bit of a ballache though
took my pics on a windows phone then transferred them to my pc. when I uploaded them to bbt it took longer than expected. my house is fairly old with solid internal walls so the hangers are good plus my missus can't decorate
or a photo editing option lurking somewhere ,but dunno never had an Apple devices 
