Send letters by computer. Can you send a short message to Unicom?

Yes, but the other party must fly online to receive it;

For Unicom and Telecom Fetion customers:

If you choose the chat window to send messages, they are all free, but the other party needs to log in to Fetion software to receive them. If the other party is not online, you will receive it the next time you log in.

If you choose to send short messages, you can send a certain number of free short messages to your Fetion friends every month for free. Unable to send Fetion SMS to Unicom, Telecom and mobile users who have not been added successfully. If you exceed the number of free text messages, you can exchange points for short message packages.

In addition, if you use the mobile phone client, you should also charge the mobile data traffic fee normally.