Why did the traffic suddenly change from 4G to 2G?

The phone suddenly changed from 4G to 2G because 4G was not activated.

First of all, we open the mobile phone settings option, you can see that the current network status of the mobile phone is 2G, then click to enter the settings page, find wireless and network, click to enter, find the mobile network option in the network settings, click on the mobile network to see the status of the current network, if you want to restore the 4G network under the 4G card, you can click to enable 4G, and finally we can see that the status of the mobile phone network has changed to 4G status.

Cellular network considerations.

Keep your phone system version and app up-to-date, as there are bugs and vulnerabilities that will be fixed by the phone manufacturer or app developer. Do not connect to public WiFi and scan*** because you don't know if it has been implanted with unknown programs.

Unknown links and unknown links do not click, clicking on links and ** can be used by malicious programs. Be cautious when installing mobile phone applications, try not to be safe for informal channels, as long as the applications developed by well-known companies can generally be on major mainstream application platforms**.

Summary. 1. If the mobile phone is in arrears, it will automatically become 2G or 3G that cannot access the Internet.

2. Traffic security settings, there will be a traffic management in the application settings, set the traffic of the month**, as long as the early warning line is reached, the traffic will be automatically cut off, and 4G will become 2G.

3. Local 4G network signal problems: Due to the poor local 4G network signal, the coverage is not comprehensive. Causes the phone's signal to become a 2G network.

I can't use my phone if it suddenly becomes 2G data?

1. If the mobile phone is in arrears, it will automatically become a 2G or traffic security setting that cannot access the Internet, and there will be a traffic management in the application settings, and the traffic of the month will be set **, as long as the early warning line is reached, the traffic will be automatically cut off, and the 4G will become a local 4G network signal problem: due to the poor local 4G network signal, the coverage is not comprehensive. Causes the phone's signal to become a 2G network.

2G, the full name of the second generation of mobile communication technology, is based on digital voice transmission technology. In addition to the call function, some systems have introduced the SMS function, which also supports data transmission and fax, but because of the slow speed, it is only suitable for e-mail, software and other information with low transmission volume.

Please check if your mobile phone is in arrears, 2G can only play ** and send text messages can not use Internet traffic Oh kiss <>

The normal 4G network suddenly becomes 2G, what's going on?

The first is that the mobile phone number has no phone bill, and the network will become 2G after arrears. The second is that the traffic is over-rated, and the operator provides a certain amount of traffic, and if it is exceeded, the speed will be limited to 2G. The third is the operator's signal failure, the local base station 4G module failure, it will not be able to provide 4G service, become 2G restart the mobile phone to try, or call customer service.