We have 3 cell phone users in our house and a bunch of old cell phones lying around. The kids get tired of playing with them and they are basically non-functional (though they do work successfully as paperweights). Are they worth anything? For the most part, no. So the best bet is to take them to a recycler that has been approved for taking e-waste.
If you prefer to rid yourself of these items via mail, the USPS is piloting a recycling program, where they provide postage-paid plastic envelopes for recycling old cell phones, PDAs, MP3 players, digital cameras and up to 4 inkjet cartridges. Call your local post office at 800.ASK.USPS to see if they have these bags. I know they carry them at 2150 Pickwick Drive, Camarillo as I plan to use a few myself.
So does your old cell phone and other old electronic equipment have any value? You could spend time on eBay and try to sell your old equipment. But you could also check out Gazelle.com, which allows you to type in information about your equipment and they tell you how much they will pay you for it. I found out that I could fetch a whopping $17 for my 6 month old LG phone while my old Nokia has no value. But they also buy old laptops, gaming consoles, digital cameras, MP3 players, etc. I found out our ancient Nintendo 64 also has no value :<
Click this link: Get Cash For Your Gadgets at gazelle.com! so that Conejo Joe gets credit if you do happen to sell something to Gazelle. Whatever I make I will donate to local charities! Go on, start uncluttering your house of old electronic stuff!