What happened when the network suddenly became 3G, and the network became 3G

Hello, if you are a China Unicom Zhejiang user, you need to meet the following conditions if you want to use China Unicom's 4G network:

1. The mobile terminal supports China Unicom 4G network;

2. The mobile phone USIM card uses China Unicom 4G** (or to activate the China Unicom 4G network experience function);

3. The location used has covered the 4G network of China Unicom.

If all the above conditions are met but you still can't use the China Unicom 4G network, you can do the following troubleshooting:

1. If you don't restart your phone after upgrading to 4G**, you won't be able to use the Internet function normally;

2. Confirm whether there is a network, it is recommended to use it in a place with a strong signal (you can refer to the surrounding Unicom user network);

3. Check whether there is still a phone bill in the account, if the balance is insufficient, you need to recharge before you can use it;

4. After 3-5 minutes of power off, restart the phone and try again;

5. Check whether the USIM card is inserted well, if it has been inserted but still cannot be used, it is recommended to go to the business hall to check whether the USIM card is faulty, or replace the card for testing.

Start by opening the "Settings" on your phone's desktop

At the bottom, there is a "Network Type Selection", just click on it.

Now select "3G network first" and it will go back, that's fine.

If you want to change back to the original 4G network, you can change it in the same way.

Open the network settings in your phone, select "4G network priority", it will go back, and only when there is no 4G signal in the area, it will go down to the 3G network.

The signal is not good, when the signal is not good, the network changes from 4G to H to 3G!

If it's in arrears, it will directly become 2G.

<> most of the networks we use now are 4G, what happens when the network becomes 3G.

The general reasons why the network has become 3G are:

1. The mobile phone can only use 3G signal, because the area is not covered with 4G signal, only 3G signal is covered, and the network will automatically become 3G smile

Second, the mobile phone network type setting, the mobile phone network type is set to only use the 3G model, at this time the mobile phone will turn off the 4G Internet access, only use 3G Internet access, in this case, you can change the network type in the mobile phone settings, change to 4G priority, and the balance can restore the 4G Internet access.

3. If the system of the mobile phone is abnormal, you can try to restart the mobile phone in this case.

Fourth, if it still does not work, it is recommended to contact the mobile communication provider or mobile phone after-sales.

1. If your 4G network becomes a 3G network, it may be due to not meeting the usage conditions. At present, when using the China Unicom 4G network, the following conditions must be met before it can be used

The mobile terminal supports China Unicom 4G network;

The current location has a 4G network covering China Unicom;

Use Unicom USIM card;

The number has 4G Internet access enabled.

2. If you meet the above conditions and cannot use our 4G network, you can contact the local customer service to help check whether the 4G base station near your location is faulty and deal with it according to the guidelines.