Why does SMS automatically become MMS? How many words will be automatically converted into MMS?

Because the content you entered exceeds the capacity of ordinary short messages, it can't be sent as ordinary short messages, but can only be converted into the large-capacity information mode of multimedia messages. Ordinary SMS has a word limit. Once out of the system, it used to be sent several times, and now some smart phones will automatically convert it into MMS.

The word limit of a short message is generally 70. If there are too many words, send them in sections. You may only see one message, and the recipient may receive many segmented messages.

There may be two reasons for a situation like yours:

First, there may be attachments in the text message.

Second, short messages are sent in words. It is very likely that there are too many short messages to be sent by mobile phone, and they are automatically sent as text documents.

Click Information-Settings-Information Settings-SMS-Information Center in the mobile phone menu and then modify it. ?

The correct information center is+8613800xxxxx500, and xxx is the local area code.

If you don't know, you can call the manual station 10086, and they will send you the correct information center number.