The concept of the iPhone/iPod Touch is to create the ultimate all-in-one device. One big part that is missing: a flash drive (yes, I know, it can’t make coffee or toast either.) The following are three ways you can use your iPhone/iPod Touch/iPad as a flash drive. The first 3 work on Macs and PCs and the fourth is Mac-only.
1. iPhone Explorer – free download that can browse media folder of device without jailbreaking, can view root directory if you jailbreak
2. Use a wifi flash drive app for iphone- There are many of these to be found on the app store. Open the app, then your computer’s web browser, and go to the address it tells you to transfer files. DOES NOT transfer pics, etc. manually like iPhone explorer, and has slow upload speeds. I use Files Lite- it is limited to 200mb so that some users will upgrade to the paid version, but there are many similar apps out there that may be a better deal
3. Use an app and service like Dropbox– Dropbox stores your files in a cloud and can access them from any web browser on any computer. They have an iPhone app to make this easy to manage.
4. PhoneDisk – PhoneDisk is free for a limited time. It does largely the same thing as iPhone explorer does, but the main difference is that when it detects an iPhone, it mounts it as a native disk. For mac only.