Bought a phone off Ebay. Treo 650. It was a local pickup. I called into Sprint to change the ESN number on my account. They then tell me that the ESN number for the Treo 650 is "Not Recognized". I gave them the 15 digit ESN number and infact the read me back the 8 digit/alpha ESN number and still said it was not recognized.... what's going on here?

I asked the straight up... was it reported stole or fradulent? They replied not at all..

Ideas?

ESN NUMBER IS 05401370498

Thanks