There is no real age you need to be to buy a cell phone by itself. However to activate the phone with service from a cell phone carrier, you need to sign a contract which in most cases requires you to be 18 years old.
Any age. The proper age I believe is 10 and up.
Companies that buy back old cell phones are ones that can then use the old phones to be used for scrap to make new and better phones for users. The companies that actually do this and buy the old phones include SellCell and USell.
RECYCLE your old cell phones
If there are old cell phones lying around the house with no hopes of ever being used again, it might be time to trade the cell phones for cash. Many cell phone companies now offer a rebate for old cell phones. People who buy new cell phones on a regular basis keep their old cell phones just in case. That sometimes becomes more of a burden than a blessing. Old cell phones are purchased and then given to people who do not have enough money to afford a cell phone. That means the original purchaser can help others while selling their old cell phones for cash.
it depends what kind of cell phone and how old it is and what the price is. a old expensive cell phone is not a good buy but a new gently used one is a good buy.
You can buy inexpensive cell phones on the Internet. In order to get the cell phones, you can go to www.cellularcountry.com/, www.cellphoneshop.net/ or www.cheapcellphonesoutlet.com/.
Yes, you can buy a wholesale cell phones. check Simply Sellular these people might help you when it comes to buy and sell cell phone.
You can buy wireless cell phones online on the Cricket Wireless website. People can go to ebay.com or craigslist to purchase used wireless cell phones.
Many companies buy old cell phones and refurbish them for resale. If you are looking to trade in your old cell for cash, check out http://sellmyoldcellphone.com/Default.aspx . They will be able to help you recycle your old phone and make some money in the process.
You can buy the latest cell phones at your carriers website. They offer the newest and most up to date cell phones that they offer for your plan. Some also offer discounts.
Most Americans buy their cell phones either directly from their carriers or from retail stores authorized to carry phones from their carriers (e.g. Best Buy).
Metro PCs cell phones will work on the countryside as I believe even the countryside will have cell phone connection. But for even better connection, you can buy an extremely old Nokia phone.
Do you mean 'When were the first cell phones sold?' If so, the answer is in the mid 1980s.