Will too many short messages be automatically converted into MMS?

Generally speaking, the word limit of a short message is 70. If there are too many words, send them in pieces. You may only see one message, and the recipient may receive many segmented messages. There may be two reasons for your situation. One is that there may be attachments in the text message, and the other is that the text message is sent. 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.

I hope I can help you.