When writing for mobile, always keep in mind that the screen of a smartphone is about 4 inches diagonally. Also, keep in mind the intended audience: mobile users have less time and shorter attention spam.
Here are a couple of tips on how to write for mobile:
• Sentences should be no longer than 20 words.
• Nested lists should never be more than 3 levels deep.
How can you think for the small screen? Well, here are some tips:
• Don’t simply try to reuse content that you wrote for the web without repackaging the message in smaller containers.
• Use WYSIWYG editing display to see how much content you have for an iPhone screen while you are writing it.
• Write directly in this mode, don’t simply preview.
The last piece of advice is this one: take your time! Don’t do like Blaise Pascal, the famous 17th century French mathematician, who once apologized to a friend writing “I made this letter very long, because I did not have the time to make it shorter“!
Localization in Silicon Valley 