Q: iPhone 4 Download App

Hello there,

It sounds like you have paused an app and wish to delete the partially downloaded item. You can still delete the app with this process, even though it is paused:

iPhone, iPad, or iPod touch

Before you delete, find out if you'll be able to download the app you deleted again (it depends on where you live).

1. Tap and hold an app you want to delete.
2. The apps will begin to jiggle.
3. Tap the "x" on the app you want to delete.

From: How to delete content you've downloaded from the iTunes Store, App Store,           iBooks Store, or Mac App Store

          http://support.apple.com/kb/HT5772

Thank you for using Apple Support Communities.

All the very best,

Sterling