How do i lock a sms message

[AC Question]

How do you "lock" a message? As in I do not want to delete those specific messages, but want to delete a all the others. I have the Droid turbo 2 and my phone is up to date.

 

[Tim1954]

Depending on software, if you open the message, you should have the three dots in top right corner. Tap them and a menu should drop down with the option to lock message...