Why is the mobile phone connected to the 2G network, but now it can't connect to the traffic and send short messages?

The location is too far from the base station,

The signal is weak.

Just use it somewhere else.

Different places, different details,

The local business hall can give the real answer.

The method is as follows:

One: Call the customer service of China Unicom, China Mobile and China Telecom.

Two: then manual service,

Three: Ask the number of the local business hall, and then call the business hall to ask.

Remember to adopt before you go, thank you!