The mobile phone has opened 4G traffic, and there is no arrears, why is it displayed as a 3G network

If you cannot use the 4G network of China Unicom, we recommend that you use the following conditions to troubleshoot the 4G network:

Use China Unicom 4G** or have opened 4G network function;

The mobile terminal supports China Unicom 4G network;

The location has a 4G network covering China Unicom;

The number card is a USIM card.

You can check whether the above conditions are met, and you can only use the 4G network after you meet them, if you still can't use the 4G network after eliminating them, it is recommended to consult the local Unicom customer service to check whether the base station facilities are faulty.

If your mobile phone cannot use the 3G network, it is recommended that you check the following conditions:

1.Please check the network mode of the mobile phone to see if it supports China Unicom 3G network.

2.Please check the signal strength of the mobile phone, if the signal is weak, it may be due to the signal strength affecting the speed of the mobile phone, it is recommended to pay attention to whether other Unicom users around you have the same situation.

3.Check if there is 3G network coverage;

4.You can try to change the mobile phone card or test whether the mobile phone is back to normal, and at the same time pay attention to whether other Unicom users around you have the same situation, if the situation is the same, you can contact the human customer service feedback processing.

If you have any questions, click here. Consultation.

If you can't use 4G, you can try to turn off the phone and restart it, if it still can't be used normally, you can check the mobile phone settings Mobile Network Mobile Data Options Voice and data to check whether the default is 3G, if so, you can re-select 4G, due to the difference in the specific path of each mobile phone type, the specific use method of your mobile phone shall prevail; Check to see if you've reached the rate limit or data cap. If you still can't use 4G, it cannot be ruled out that the conditions for use are not met. At present, the following conditions need to be met to use the China Unicom 4G network:

1) The mobile terminal supports China Unicom 4G network 2) The current location is covered by China Unicom 4G network 3) Use China Unicom SIM card.

4) The number has opened the 4G Internet function (you can send SMS "KT4G" to 10010 to apply for activation, and the activation will take effect immediately) If the above conditions are met and cannot be used, you can contact the manual customer service of the home location to inquire whether the base station at the location is faulty and deal with it according to the guidelines.

There are many Unicom netizens who encounter 4G jumping to 3G and then unable to access the Internet, which is roughly due to the following reasons:

1. The problem of receiving and calling**, generally speaking, the system will automatically switch to 3G mode for voice calls, and switch to 4G mode when using data traffic. Sometimes you can't switch to 4G mode smoothly in 3G mode, which leads to the problem of not being able to connect to the Internet.

To solve the problem, turn on the airplane mode of the phone, and then turn off the airplane mode after it takes effect. Let the system switch to the network can solve the problem. If you often encounter such problems, you can try to activate the voice service to solve the problem.

2. Due to network reasons, the user's place is not well covered by Unicom's 4G signal. You can try to switch the airplane mode once in a place where the signal is good. If it is confirmed that it is a signal coverage problem, you can ask Unicom customer service how to solve it.

3. The SIM card is in poor contact with the mobile phone, and some old SIM cards will be unstable when they are cut and used in the iPhone. You can try to get a new version of the SIM card, the kind that doesn't need to cut the card. Some netizens tested it and successfully solved the problem of unstable 4G signal on his iPhone after changing the card.

4. Mobile network setting problem: In the mobile network settings of the mobile phone, change the network to 4G priority. Some netizens will solve the above problems after setting it up.

5. Finally, there is another possibility, which is network locking. Your Unicom** exceeds the fixed traffic. At this time, this SIM will not be able to use the 4G network for that month. At this time, we can try to change to a SIM card with data.

If your phone originally had a 4G card or a 5G card, then in this case, your phone changed to 3G and it is likely that the mobile phone card is in arrears.

Summary. There may be the following reasons for the poor signal of the Unicom mobile phone card:

1.The mobile phone card is not plugged in properly, and the contact is poor;

3.The mobile phone card, card slot or mobile phone terminal is damaged;

4.The status of the mobile phone card is abnormal (such as shutdown, etc.);

5.The mobile terminal does not support China Unicom.

Here are some things you can try:

1.Turn the phone on and off and restart it to test it;

2.Reseat the mobile phone card and check whether the card slot is loose or deformed.

4.Test whether the mobile phone card or terminal is faulty;

5.Verify that the status of the SIM card is normal;

6.Check whether the mobile terminal supports China Unicom.

If the above methods still cannot solve this problem, you can contact the local Unicom customer service or go to the local Unicom business office for feedback.

Hello. There may be the following reasons for the bad signal of the Unicom mobile phone card:1

The status of the mobile phone card is not normal (such as shutdown, etc.); 5.The mobile terminal does not support China Unicom. Here are some things you can try:

1.Turn the phone on and off and restart it to test it; 2.Reseat the mobile phone card and check whether the card slot has loose or closed limb shape and other poor contact; 3.

You can re-search the network in another location or ask nearby users if they are using it normally; 4.Test whether the mobile phone card or terminal is faulty; 5.Verify that the status of the SIM card is normal; 6.

Check whether the mobile terminal supports China Unicom. If the above methods still cannot solve this problem, you can contact the local Unicom customer service or go to the local Unicom business office for feedback.

Summary. Hello, China Unicom traffic card shows that 3G can't get on the network, check the network signal problem in the area, if the signal is unstable, it will also lead to the display 3G can not be used, you may be caused by this reason. If this is the case in all places, you will have to call a human customer service to have it checked for you.

Hello, China Unicom traffic card shows that 3G can not be connected to the network, check the network signal problem in the area, if the signal is unstable, it will also lead to the display of 3G can not be used, you may be or file due to this reason. If all places are like this, you will have to call the human customer service to let the rental delay check it out for you.

The signal is fine.

Then you need to call the manual customer service ** to check your mobile phone number network problems.

How to call human customer service.

It is to dial 12333 directly and then transfer to manual service according to the prompts.

Sorry for the mistake.

What kind of card are you, China Mobile 10086 to manual or Unicom 10010 or Telecom 10001 can't be transferred. Why can't I transfer it?

After you get through, follow his prompts to transfer to manual service.

1. Check whether this situation occurs in other mobile users around, if there is a similar situation, it may be a local network signal problem.

2. Check the Internet settings of the mobile phone, and you can reset the network parameters and restart the operation of the mobile phone.

3. Check whether there is still a phone bill in the account and whether the mobile phone status is normal.

4. Change another SIM card or try to change the time period to eliminate network problems.

5. Upgrade your phone to the latest version.

6. If it doesn't work, please back up the data in your phone and restore the machine to factory settings.

If the problem persists, please bring the purchase invoice, repair card and mobile phone to the service center for inspection.

Hello, the fact that the mobile phone is not in arrears does not mean that you can use the 4G network. At present, the 4G network is not fully covered, and there may be no 4G signal in your place.

If there is a 4G signal in the current area, the mobile phone does not support the 4G network of the mobile phone card, for example, the mobile phone is the 4G version of China Mobile's mobile phone, and the Unicom 4G card is used, then the 4G network is generally not available, please understand.

It may be that the 4G network does not cover you.

1. If the mobile phone cannot access the Internet normally, you can troubleshoot according to the following conditions:

Situation 1] The contact between the SIM card and the metal contacts of the mobile phone is insufficient, and the SIM card can be reinserted.

Situation 2] If the SIM card is damaged or there is a problem with the mobile phone, you can change the phone to test whether it is the SIM card or the mobile phone is faulty.

Situation 3] The current location is a signal blind zone or suddenly no signal, you can change places to test and pay attention to whether the mobile phone signal of other users around you is normal.

Situation 4] If the mobile phone card is in arrears or is shut down, you can pay off the arrears and turn it on.

Situation 5] The service is suspended due to abnormal use of the number, such as the number being used for illegal or illegal activities.

Situation 6] Roaming in Taiwan, Hong Kong, Macao or abroad can only be used after enabling Taiwan, Hong Kong and Macao roaming and international roaming.

Situation 7] If the total traffic generated by the Internet reaches the ** traffic cap value in the current month, the system will automatically turn off the Internet access function, or limit the speed of the network, and the network will be automatically restored in the next month, which shall be subject to your ** traffic cap rules.

2. If you need to use the China Unicom 4G network, you need to meet the following conditions:

China Unicom** used to open 4G network function;

The mobile terminal supports China Unicom 4G network;

The location covers China Unicom's 4G network;

The number must be a 4G supported USIM card.

If the above conditions are met and your problem is not solved, you can click here.

Feedback, we will check and deal with it as soon as possible.

No, if the mobile phone is in arrears, you can't dial ** and can't access the Internet, and the data connection indication is not, 4G to 3G should be your local signal problem, the solution is as follows:

1. First, click the settings icon on the iPhone desktop to open the settings page.

2. After opening the settings page, you can see that there is a cellular mobile network, click on it.

4. After opening, you can see that the voice and data are set to 3G, which caused my network to be 3G, click on it.

5. Set voice and data to 4G, so that you can see that the network in the upper left corner of the page has been changed to 4G.

No, as long as the 4G cellular is turned on, in the area with 4G signal coverage, 4G** is handled, and the arrears are also 4G