Submitted: Jul 1, 2008 - Is it time for a new cell phone? Perhaps the new laws in California and Washington that require hands-free cell phone use while driving mean you're upgrading to a Bluetooth headset. Or perhaps you just want a spiffy new iPhone when it goes on sale.

Whatever the need for another mobile, make sure to take proper care of your old handset before you start chattering away on your new one.…