Can I make a mistake so that I don't send SMS? --Because I can't hear it now, why is it an iPhone?

The monthly calls paid to the carrier include voice calls, data communication, and "SMS" items.The importance of SMS as a communication tool is not as much as the spread of SNS services such as LINE, but there is no other strength that can send messages with mobile phone numbers as landmarks.In recent years, it has been used as a means of two -stage authentication, and it seems to be an indispensable service for smartphones in the future.

The SMS is a service provided by a carrier and is basically charged.Taking the NTT DOCOMO as an example, the fee is 3 yen each time (within 70 characters in full -width characters), and the full -width converted is 3 yen for each 67 characters, up to 30 yen/full -width 670 characters.Because it is a common standard for the world, it can be transmitted and received regardless of the country/region, but since international SMS transmission costs at least 50 yen each time, it is more expensive than email or SNS services.

And iPhone users have "IMESSAGE" provided by Apple.The same iPhone user (a user with an Apple ID) can be used for free, regardless of the number of characters and attached images, so it can be used as an alternative to SMS.

Even if the mobile phone number is specified as the destination in the message application attached to the iOS, if the person uses an Apple device such as the iPhone, it will be sent by iMessage instead of SMS.There is no need to worry about the incidence of the fee because the SMS -specific message with a 670 -character super -attached or an image is automatically switched to iMessage or MMS (other than iOS terminals).

If you are still worried, if you want to prohibit SMS transmission, open the screen in the order of "Settings" → "Message" and turn off the "Send by SMS".Note that if you lose anxiety about communication charges, it will be difficult to contact people who use Android or feature phones.