It has been widely reported that Sprint would start capping downloads for Mobile Broadband Cards and Phone-As-Modem (regular cell phone WAP browsing is unaffected). Up until recently there hasn’t been any formal notification that the data plan was anything but unlimited. Now with the new plan updates the online description of the plan has changed and the terms and conditions now read:

Data Usage Limitation (Mobile Broadband Cards, USB Modems, Imbedded Modems and Phone-As-Modem): The amount of data transmitted over our network is measured in kilobytes (KB), megabytes (MB) or gigabytes (GB). Sprint reserves the right to limit throughput speeds or amount of data transferred; and to deny, terminate, modify, disconnect or suspend service if usage either exceeds (a.) 5GB/month in total or (b.) 300MB/month while off-network roaming. 1024 KB equal 1 MB. 1024 MB equal 1 GB.

Callers to Sprint customer service asking for clarification on this are being met with a variety of confused explanations from Sprint. For now it looks as if Sprint reserves the right to throttle, charge, suspend or discontinue the service for anyone exceeding the 5GB download limit on Mobile Broadband Cards or Phone as Modem plans (regular cellphone data does not appear to be affected).

Link: Sprint terms and conditions via SU