Pocket-Lint: The iPhone is a hugely powerful reference tool. Like having a portable library stuck in your pocket, you can find an answer to pretty much any question instantly. Sure it might not always be correct, but there is an armada of info buried at your fingertips.

Be it a bit of extra gossip on a museum exhibit, or a chance to get one up in the knowledge stakes with your friends, these applications will provide plenty of info as quick as your handset can boot up the app. (iPhone, Phones, Software)