On the other hand, you may find the fonts in your texting conversation on your Samsung Galaxy S9 to be too big. Big fonts cause you to miss earlier comments.
You can dive into the Settings and dig around to manage the font sizes. That is really for the people who did not read this cheat sheet. All you need to do to make that text font bigger within the texting application is to put two fingers on the screen and move them apart. Likewise, you can make the font smaller by putting two fingers on the screen and pinching them together.