This added monthly fee adds up more than time, making smart phones additional expensive within the lengthy run. As an instance, consider a PDA that charges $300 and a smart phone that charges $99 as well as an extra $40 per month for data service. After just one 12 months of service, you are going to have spent a total of $579 for your smart phone and data service. Browse our expansive on the internet selection to shop for new or refurbished PDAs and Smart phones and choose from a wide variety of styles, colors, and producers. Even though the initial buy price of some smart phones is much less than the cost of the PDA, due to wireless carrier subsidies, you'll normally pay far more for PDA Smart Phones more than one or two years than you would having a PDA because of ongoing expenses.