In the press release announcing the change, Sprint says that its smartphone customers use, on average, 10 times more data than users of feature phones. (As well they should.) [ Sprint , 2 ]

Note that if you're not currently using the EVO 4G, Epic 4G or Shift, but are using another smartphone (defined as "devices with robust operating systems bringing the full function of mobile applications and programs to life including Blackberry, Android, Windows Mobile, Palm, and the Instinct family of devices"), you're not going to be paying the extra $10 until you upgrade or activate another smartphone. In other words, you're grandfathered in.

When the HTC EVO 4G was announced last summer (and later with the Epic 4G and Shift 4G), along with it came an extra $10 fee that Sprint swore up and down wasn't a 4G tax. It wasn't, and it still isn't, and starting Jan. 30, everyone with a smartphone will be subject to the "$10 per month Premium Data add-on charge."

Smartphones Drive Wireless Data Explosion

OVERLAND PARK, Kan. (BUSINESS WIRE), January 18, 2011 - Today’s ability to do more things on the go – such as watching videos, sharing pictures or checking directions – is not only changing the way we live; it is driving exponential growth of mobile data traffic.

Sprint (NYSE: S) is committed to providing its customers a great wireless experience now and in the future. From its packed portfolio of innovative phones and devices to its leadership in introducing 4G services, to its consumer-friendly Everything Data plans, featuring unlimited text, Web and calling to any mobile phone, Sprint offers the best value in wireless.

Sprint will increase its postpaid rates by applying a $10 per month Premium Data add-on charge to activations of smartphones beginning Jan. 30. The charge will assist Sprint in offering simple and affordable unlimited plans for its customers while maintaining a wireless network able to meet the growing appetite for a richer mobile experience. Subscribers with smartphones will still receive the best value in wireless, including the Any Mobile, Anytime feature offered nationwide only by Sprint.

Sprint also offers a full range of traditional feature phones, including popular eco-friendly or touch-screen handsets that do not require the Premium Data add-on charge but still have a great range of capabilities with voice, text and data access. Existing Sprint smartphone customers are not affected unless they upgrade to or activate another smartphone.

“Sprint wants its customers to experience the range of entertainment and productivity possibilities available with today’s wireless technology,” said Bob H. Johnson, president of Sprint’s consumer business. “While some of our competitors impose overage charges and complex plans, Sprint continues to provide a worry-free, unlimited data experience while on the Sprint network. This is responsible, sustainable and reflects our commitment to simplicity and value.”

“Sprint’s decision to apply the Premium Data add-on charge to activations of smartphones going forward recognizes the enhanced user experience that today’s smartphones deliver, which, in turn, drives substantially higher data usage and cost,” said Roger Entner, analyst and founder of Recon Analytics.

“Building, maintaining and expanding wireless data networks isn’t free – there are real costs involved. In effect, Sprint has chosen to increase the price of its unlimited Everything Data plans, which is still below that of its major competitors, for the segment of customers – smartphone users – who are using wireless data the most and are driving up costs. Consumers have many choices. They can choose unlimited, worry-free data plans on the Sprint network or they can have tiered, metered plans and overage charges with other wireless carriers.”

Smartphone customers use, on average, 10 times more data than users of traditional feature phones. Smartphone users have access to more data capabilities, applications and other functionality than traditional feature phones. Examples include access to thousands of applications and games through online marketplaces and full HTML Web browsing with Adobe Flash technology that allows users to browse the Internet on their devices just like they can at home or in the office.

Sprint defines smartphones as devices with robust operating systems that deliver a rich wireless experience by bringing the full function of mobile applications and programs to life, including Blackberry, Android, Windows Mobile, Palm, and the Instinct family of devices. The Premium Data add-on charge previously applied to HTC EVO 4G, HTC EVO Shift 4G and Samsung Epic 4G devices.

“Sprint continues to be the carrier for people who want to do more than just talk with their wireless devices,” said Johnson. “Customer growth on our 3G and 4G networks, exponential increases in the use of mobile data applications, and the growing use of smartphones is proof that consumers are getting the message.

“Sprint’s unlimited data plans, with or without the $10 charge, continue to beat the offerings of our top national competitors, who cap users’ data, charge data overages, and do not offer the unique functionality of Any Mobile, Anytime, which gives subscribers on the Sprint network unlimited calling to any other wireless user in America regardless of carrier.”