How do you charge for sending videos or pictures by iPhone5s SMS, or do you need traffic, or what is the situation in wifi environment?

All short messages are charged for communication, that is, telephone charges. Sending text messages is the same as making phone calls, unless there are many text messages sent to you for free, which has nothing to do with wifi. The cost depends on the amount of information you send. 60 words each, that is, 10 cent. A normally compressed photo is a multimedia message, which costs 30 cents. Sending video depends on how long the video you take, which is definitely more expensive than sending photos. So I suggest you send pictures or videos with QQ or WeChat when you are connected to wifi, so there is no charge. I hope I can help you.