I know that for a long time, Sprint's "Phone Data" was "Unlimited" being truly unlimited.
Air Cards and "Phone as Modem" usage had a 5gb cap.
My acct. still shows my phone data being "Unlimited"
On the link for "Read More about Mobile Broadband Plans" I get the following:
Code:
Connection card plan policy
Plans include a maximum of 5GB of data usage. If you are on a plan with a specific limit of less than 5 GB (e.g., the 50 MB connection card plan), your plan's specific data limitation and associated overage rates continue to apply.
Effective July 13, 2008. 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.) 5 GB/month in total or (b.) 300MB/month while off-network roaming.
Business customers