06-07-2013 05:06 AM
06-08-2013 05:35 AM
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Have you performed a security wipe before using that used device ? If not then first do a backup of your device using Desktop Software , for help refer to this article How To Backup Your BlackBerry .
Once you have your backup , follow this Knowledge Base article :
KB28225 : BlackBerry smartphone must be security wiped before transferring ownership
After a Security wipe you can use your own BlackBerry ID which will associate with that device .