Getting charged for text messages on iMessage
I have a pay-as-you-go ATT Go Phone SIM chip in my iPhone 4S. Previously, I had the phone set to to restricting text messages to Wifi, through the Cellular setting in General, under Settings. As I consequence, unless I want to pay for a text message, I cant send a text through iMessage without being charged unless I am connected to the internet. In addition, I used to not receive text messages from other senders until I was near a wifi connection. Presently, spontaneously it changed and I am now being charged for any message that a Sender texts me if I am not within range of a wifi connection and I am getting hammered on misnutes. What setting needs to be adjusted to fix this?
iPhone 4S