There often are some major surprises that people find when they try to obtain a record of their own or other people's text messages from Verizon. These troubles can make it difficult trace text messages for legal or personal reasons.
Retain a lawyer to initiate a subpoena. No text message copies, even those from one's own phone, can or will be issued without a subpoena.
Act with extreme haste. The time limit that text messages are kept within the Verizon system is limited to no more than 72 hours, unless otherwise instructed by subpoena.
Have the lawyer send out the subpoena. If Verizon complies, you will receive the text messages.