Most mobile gadgets contain a basic app for taking notes on the go. Perhaps you need something more robust. Look no further than Evernote. This is great for taking basic text notes. You can also take photo notes or voice notes.
What sets Evernote apart from similar apps is that it synchronizes your notes to your password-protected Evernote account. So, you can access the notes from any Web browser.
You can even type long notes on your computer and access them from your mobile gadget.
There's also a geo-location feature. You can search for notes based on the location from which they were uploaded. Evernote is a great way to stay productive on the go.