If you exceed the amount of text msg your phone is set to will it delete all of them

[AC Question]

I had a lot of messages from one person and when I opened my phone today all the messages between us except ones I locked are gone.

 

[Javier P]

Welcome to the forums. What phone do you have? In some stock messaging apps there's an option to delete old messages when limits are reached. Do you have this option enabled?