iPhone 5 displaying single 1x icon instead of 2x? All of the icons on my iPhone 5 display at 2x, but for some reason, my SchoolsFirst eDeposit icon displays the 1x image. Any idea how I can fix this? I tried deleting/redownloading the app, and hiding it in the "Purchased Apps" section of iTunes, and nothing worked.
The app probably doesn't have a 2x icon. Apple doesn't allow apps in the store with only 1x, so I assume this app has not been updated in a very long time?

Contact the developer and ask them to fix it. Nothing else you can do, only the developer of an app can modify it (this is a security policy enforced on iOS to prevent malware attacks).