Why are my texts disappearing

[AC Question]

Currently has been happening and I'm getting frustrated. I erase the text message that helped . I also erase the name I'm having issues with during the texts . That helps but happens again . I turned on and off my phone . I hate erasing my message bc it's really important to keep them . Please tell me what to do !!
Why is this happening now ?

 

[ManiacJoe]

Which phone?
Which version of android?
Which carrier?
Which texting app?
When you say your texts are disappearing, do you mean that the "phone" is randomly deleting texts on you, or that you are deleting the texts and later realizing you want them back?