How fast is the text message sent?

If you send a text message by mobile phone, there are two mobile phones at first, using different numbers. There is a charge for sending text messages. The mobile phone that receives the SMS may have a bad signal, and the SMS will be delayed until you can test which one of your mobile phones sends the message and the other one receives the message to see which one is fast, which one is fast and which one is slow. If it's reception? It should be at least one or two minutes later, the user can receive the short message or the user can't receive the short message because the built-in storage space of the mobile phone is insufficient.