iOS UIButton background image not showing up when tested on iphone

[stoopkitty]

so, I made my app and everything, and it has a few UI buttons with background images, which worked fine when it was on the computer and i was testing in iphone sim.
now, when i test on a real iphone, the buttons just show up as standard UICustomWhiteRect or whatever it is called.
here is the code i use to make them:

filepath = [[NSBundle mainBundle]
            pathForResource:@"button-half@2x" 
            ofType:@"png"];
[sendAsOneSMSButton setBackgroundImage:[UIImage imageWithContentsOfFile:filepath] forState:UIControlStateNormal];

i also have one for when it is pressed, which i set just like that. and just so no one asks me, the images for the buttons are both in my main folder the same folder my .xcodeproj file is in.
what could i be doing wrong?

SO:
they work in iPhone Simulator
they show up as normal buttons without images on a real iPhone.

 

[dejo]

Make sure when you add the images to your project that the "Copy items into destination group's folder (if needed)" option is checked.

 

[stoopkitty]

and just so no one asks me, the images for the buttons are both in my main folder the same folder my .xcodeproj file is in.

maybe i wasnt clear...all of the images are in the folder that my .xcodeproj is in. is this what you mean?

thanks!

 

[dejo]

And they show up as files within the project in Xcode as well?