Dollar General offers Tracfone cellphones, which are pre-paid phones with no annual contract, allowing users to only pay for the phone in the months they use it. It is a less expensive alternative to the Straight Talk program, which is primarily intended for smartphones.
It's possible to buy a simple flip phone from Dollar General for as little as $15 as of 2015, but this price does not include the cost of minutes and service time. Dollar General also has a partnership with T-Mobile to provide data plans for smartphones. Depending on how often someone uses a phone, a cheap prepaid phone may be a viable option.