Jailbreaking is definitely one of the ways to open it up to a lot of possibilities, try new themes, add more and more needed functionality to your iPhone. One of the most missed features on iOS is that you as a user cannot really download any file from the internet and save it on your device. This problem can be easily rectified by using a jailbreak tweak called 'Safari Download Manager'
Safari Download Manager: Download files, mp3s and videos to your iPhone
The Safari Download Manager Jailbreak tweak is a sort of an extension to your Safari browser that allows you to download practically all file types over the internet, be it your mp3 songs or be it a YouTube video which you can later on import into your iPhone The tweak has been made highly configurable in the fact that it allows you to decide which extensions to allow for downloads and which you don't want to allow and also allows you to download multiple files at the same time and choose where each file goes.The Safari Download Manager is available for download from the BigBoss repo at a price of $5 and in our opinion it offers enough of a punch to be worth every bit of it.
Safari Download Manager Release Notes
Safari Download Manager is an extension that adds a powerful, highly-configurable download manager to the iPhone's web browser. Like never before, you can take control over downloaded file types, and harness the true power of the network connection on your device.
Choose to download more than one file at a time!
Choose to break out of the limited downloading you used to do!
Choose to make your iPhone or iPad the mobile computing platform it deserves to be!
Choose Safari Download Manager for all your downloading needs!
Please note: Safari Download Manager is just that, a download manager. It will, by itself, not allow you to view your downloaded files; for that we recommend installing iFile. Purchasing Safari Download Manager will save you $2.00 on iFile.