I've read that sending pictures through texts shouldn't use data from my plan, however whenever I check my data on self-serve it keeps going up. I edited my APN so that it would only use MMS, and I verified that the data used on my self serve is only going up when I'm texting pictures to people, my data hasn't been used for anything else yet. I used both the default android messanger app and then textra, both caused it to go up. Is this normal? I thought texting wouldn't use my data.