[mulhiny]

In the fine print of your contract is states that Sprint can drop you if you exceed 800 mins a month roaming. This is off of Sprint's Terms and conditions.

"Off-network Roaming on Sprint Phones: Not available with single-band phones, or to customers residing outside an area covered by the Nationwide Sprint Network. Sprint may terminate service if (1) more than 800 minutes, (2) a majority of minutes or (3) a majority of data kilobytes in a given month are used while roaming. International calling, including in Canada and Mexico, is not included in plans with no roaming charges. Roaming usage may be invoiced after 30-60 days. Data services and certain calling features (Voicemail, Caller ID, Call Waiting, etc.) may not be available in all roaming areas."