Massive content is short messages. Why is MMS charged?

When the user turns on the group sending message switch in Settings-Information and adds multiple recipients, even if the group sending content is a text message, the iPhone will send it in the form of MMS. Users are advised to turn off the setting in Messages-Send messages in groups and try again. Note: If users don't want to send or receive MMS, they can turn off the switch of sending and receiving MMS in Settings-Info. For more service benefits, click on "official website" customer service 220 below to answer your questions.