does anyone know what the command is to wipe out all the data on your phone?

I have a 10" black and green NEC monitor I used with my Apple IIc, I just can't bring myself to throw away. The picture is still very sharp, very clear....just...black and green.

"The command?" There's no one command that universally does a secure wipe of all private data on a cell phone. In fact, even if you do find such a command (which will undoubtedly be specific to your make and model of phone), it's very unlikely to actually erase the contents of the memory. It'll just change some pointers to effectively say, "This is free space now, overwrite it at will!" Problem is, the data's still there, and still accessible to a determined attacker.

If you're paranoid about this (and there's good reason to be), do what I tend to do with old, dead hard drives - smash them with a hammer. Seriously. If I have working drives I want to re-use, sure, I'll hook 'em up to a Linux box with a USB-to-IDE adaptor and do a wipe -k on them. But if the drive's already dead? It's hammer time!

Hmm...I am looking to sell some old cell phones of mine on eBay...what is the best way of protecting myself, if regular deletion of info through the menus isn't effective enough?

I wonder if you get just use a huge magnet to wipe the data...