Joke Collection Website - Public benefit messages - Does it cost money for mobile phones to receive short messages sent by mobile phones?

Does it cost money for mobile phones to receive short messages sent by mobile phones?

It is free to receive short messages on mobile phones.

Send a text message to Unicom, send 1 Mao/message.

Unicom sends mobile 1.5/ piece.

The mobile phone sends 1 piece to the mobile phone.

Move to Unicom to send 1 wool/piece.

Send yourself 1 wool/piece.

PHS sent 1.5/ piece.

Every place is different, and the above is for reference only.

If there is a set meal, it depends on the local price.