Why can't PHS send short messages?

ZTE ZTE's first-class customer service engineer answers the landlord's questions.

He can make calls, but he can't send and receive messages. This situation has nothing to do with the PHS you use! Because sending and receiving short messages need network support, which is usually caused by telecommunications.

You can take the owner's ID card to the business hall to consult the service personnel.

Their general practice is to cancel your short message function first, and then reopen it (for a short time), so that your PHS can send and receive short messages normally!