My iPhone 4 is stuck on Download now?

I went to app store to download a new app I installed it, it told me to agree terms of conditions and I agreed and now its stuck on download now it says my download will begin now I click ok but it doesn't budge and I can't restart my phone becuz I'm on jailbreak if it restarts I need to go on a program on the laptop it takes ALOT of time and only my sister can do it Help

Was going to suggest restarting but you've covered that one nicely yourself.

Best thing is to let the battery be drained (should take eight- nine hours) and then re-charge and it should work.

Alternatively, reset it: hold the sleep/wake button & home button for about 10seconds-ish.

Also try tapping the home button twice(actually do this first) it will get the force-close app thing up.

Maybe it found out that you haven't really READ and agreed, so it's sick and tired of people lying.