Joke Collection Website - Public benefit messages - What are short messages in the network, short messages between networks and short messages in Monternet?

What are short messages in the network, short messages between networks and short messages in Monternet?

In-network short message means that the mobile phone numbers used by the sender and the receiver belong to the same communication operator (for example, sending short messages from electrical signals to electrical signals).

Internet SMS means that the numbers used by the sender and the receiver belong to different communication operators (for example, the telecom number sends SMS to the number of China Mobile or China Unicom).

Monternet SMS generally charges a service fee. For example, using SMS to open various drills belongs to Monternet SMS business.