Although the iPhone works well for short texts or notes, editing what you write is a pain, particularly tapping into exactly the right spot. You can avoid a lot of frustration with this trick: press and hold on the onscreen keyboard—the keyboard goes dim and turns into a trackpad! Keeping your finger down, move your finger on the dimmed-out keyboard to move the insertion point in the text above. Drag the insertion point to where you want to begin editing and let up. The keyboard reverts to normal immediately, so you can make your edit. This tip also works on the iPad, where you use two fingers instead of press-and-hold, but not on the iPod touch.