Made a quick’n simple template for sketching the UI of an iPhone app I’m working on, it looks like this:
There are 4 formats:
The column width is 33% and 25% for the 3 columns and 4columns versions, respectively, the fourth one is a combination of the 3 and 4 columns, I find it rather useful.
Download the ZIP file with all 4 PDFs
Remember to share and – for mother nature’s sake – try not to waste paper 
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