Who I have the same questioned this topic

I have text messages that I never deleted from the Verizon Messages app that I need to print out for a court matter.  The messages still show up on my iPhone 5S iMessages but they are not populating in the Verizon Messages app.  How far back are they saved?  Is there a way to print them out or e-mail them other than 3rd party apps or screenshots?  Are the archived on a Verizon server somewhere that I can get the transcript?