I know that you can get a blacklisted ESN on a Sprint phone by not paying your due bills. However, I’m seeing ads on eBay for Virgin cell phones with bad ‘ESN.’ How do you end up with a bad ESN on a prepaid cell phone? What can cause Virgin cell phones to be tagged with bad ‘ESN?’ I would really appreciate your useful information regarding this. I hope to hear at the earliest from you guys out there. Thanks.