Why does my text messages convert to MMS on my Samsung Galaxy A3 (2016)?

I generally use the Text function.  Why sometimes does this revert to mms?   I have seen my bills increase and when I query this, I am told it is because I have used mms. 

Hi there. I believe you go over 160 characters that's why your text message automatically converts to MMS. I suggest installing other text messaging app that supports more than 160 characters. Visit Google Play store to install one. Hope that helps.

Not the answer you were looking for?

Browse for more answers inside the: Samsung forum, Samsung Galaxy A3 (2016) forum