The Blackberry is a popular PDA,Open the back cover of the Blackberry. Remove the battery and look for a white label underneath showing the unit's ESN. This will either be an 8-character string starting with a letter, or an 11-number string, depending on the age of the Blackberry. Write down the ESN.ESN, SSN, cellular number, billing ZIP code and receipt number for new phones..
If you cannot activate your phone online, call the customer service number listed on your Verizon bill or Verizon receipt. Follow the phone tree to "Activate Phone".