I own a Nexus 4 and like the title states, I can't send or receive pictures through text without data turned on. The problem is, I don't have data as a part of my plan, but unlimited texting is. My question is, will I be charged if I simply turn the data on when receiving/sending texts? Because my phone is still measuring that data is being used. Or is there any other way to go around having to turn the data on? If I have both data and WiFi on, will data be used?