Joke Collection Website - Public benefit messages - What's the protocol for texting?

What's the protocol for texting?

Short message protocol, that is, short message protocol supported by mobile phone, that is, multimedia protocol.

At present, there are mainly three kinds: SMS, EMS and MMS.

The number of SMS centers varies from city to city.

For example, Shanghai is 138002 10500.

2 10 can be replaced by the area code where your mobile phone card is located.

For details, please call 10086.