(Pocket-lint) - There are some great tips and tricks hidden within iPhone's software. Whether it's scanning a document without a third party app, or using the Apple logo on the back as another button, it's got some excellent gems to make everything a little easier. We've got a feature rounding up some of the best tips and tricks for iPhone, but here we are focusing on how to close down all Safari tabs on your iPhone at once. You might already know how to do this, but if you don't, you are welcome, because this little trick is one of our favourites.