Not able to backup sent text messages

saxxman

    Have a T-mobile LG V30. Have been using multi-line and Digits. Am getting ready to leave my current employ and have been trying to backup my personal text messages. Can't find a method that will backup my sent messages.

     

    I should have been all over this back when the phone would switch lines while trying to use a Digits line to text, the phone would switch to using my simm number in the middle of a text conversation.

     

    Any help? I'm not expecting a solution, but I thought I would try. T-mobile store manager doesn't have a solution. Nor does T-mobile 611.

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