Most of us probably have at least one cell phone that has been retired and is collecting dust. There are tons of places that used phones can either be recycled or donated these days, but a common question is how to erase your personal data from a cell phone.

The best place I've found so far is here. Select the manufacturer and model of your cell phone (or a near match), download the PDF instructions and follow along.

On that same web site, you can also find a donation drop off point for your cell phone. At some sites, you can even take in batteries, chargers, and the other accessories you may have accumulated.