How to stop an app download from an iphone?

I have an iphone, the lock button doesn't work so i can't turn it off. I started downloading an app and it froze i tried to pause it but it won't work and i also don't have a working computer right now so does anyone know how i can cancel the download and restart it so it will finish it has been downloading for hours now and it hasn made any progress.

Someone please help!

Try holding your finger on the app until it wiggles. Do you have the option to X out of it? If not, we may be able to get it to stop through a different way, but it will take some time.

Plug in to iTunes. Select your device. Click "Back Up Now" to create a back up of your phone. Once the back up is done, click "Restore Back Up." This will essentially force your phone to restart. It's going to just restart and restore itself to what you just backed up. It's a really round about way to do it, but since your button is broken, it may be the only way.

How long have you had your phone? Have you contacted Apple Support to do some troubleshooting and see if you're eligible for a repair? 1-800-APL-CARE.