Determine how many calls you're likely to make, when you're likely to place the calls, and what days you're likely to make the calls. Carriers provide a variety of pricing plans. Try to find a plan that best fits your calling patterns. There is a monthly access fee and charge for airtime. If you plan to use the phone in emergencies or only occasionally, you may want to select an economy plan.
Many carriers offer plans that provide a certain amount of free minutes usage.
If you plan to be a heavy user, you should consider getting a service which provides a higher monthly fee, several free hours, and the lowest rate of extra air time. Shop carriers to see which provides the best pricing plan, coverage and features to meet your calling needs. Get the type of phone best-suited for your calling needs. For example, if you're only going to use the phone while driving, consider getting a mobile phone. If you need a phone that travels easily with you, consider getting a portable hand-held.