The king card becomes 3G and can t be connected to the Internet

The phone can't access the Internet with mobile data, Samsung phones are generally recommended to do the following:

1.Swipe down the top curtain of the screen to turn on mobile data. 【Tips】The SIM card needs to be activated for Internet service.

3.Try a different SIM card or a different time period to troubleshoot network issues.

4.Upgrade your phone to the latest version.

5.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, warranty card and machine to the service center for inspection. Samsung Service Center Address Information Customer Service**, you can inquire through the following methods: Please log in to the service center page of Samsung's official website - select the product you want to inquire about and the province or city where you are located to search.

According to the information you provide, 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's 4G network.

3) Use Unicom USIM 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 you still can't use it after meeting the above conditions, you can contact the local customer service to inquire whether the base station at your location is faulty and follow the guidelines.

There may be the following reasons that cause the Unicom King Card to suddenly become a 3G network:1Unicom King Card**Change:

If your Unicom King Card** changes, it may affect your network speed, causing your network to change from 4G to Regional network coverage problem: If your regional network coverage is insufficient, it may affect your network speed, causing your network to change from 4G to China Unicom network maintenance and upgrade: If China Unicom is maintaining and upgrading the network, it may affect your network speed, causing your network to change from 4G to Mobile phone setting problems:

If your phone is set up incorrectly, such as turning off the 4G network or choosing to use only the 3G network, it may cause your network to change from 4G to 3G. Here are some things you can try to fix the problem:1

Check whether your Unicom King Card** has changed, and if there is a change, you can contact Unicom customer service for consultation. 2.If you are in an area with insufficient network coverage, you can try to move to an area with a better signal to use the network.

3.If China Unicom is upgrading the network to a simplified network level, you can patiently wait for the maintenance and upgrade to be completed before using the network. 4.

Check that your phone is set up correctly, make sure that the 4G network is turned on and you choose to use the 4G network. If you still can't solve the problem, you can contact Unicom customer service for consultation.

The steps to resolve the problem are as follows:

4. Then find and click on the option named "Network Mode" in the "Mobile Network" page;

5. Finally, click on the circle behind "4G, 3G, 2G Auto Select" in the option box of the "Network Mode" option, and then you can use the 4G network.

Summary. 1.Use 4G** or have enabled 4G network function;

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

3.The location has a 4G network covering China Unicom;

4.The number card is a USIM card.

If it's all right, you can try shutting down and restarting, or call ** directly to contact the operator.

Hello, I have seen your question and am sorting out the answer, please wait a while oh mmmm. 1.Use 4G** or **Lead ruler Min has been trapped and early access 4G network function; 2.

The mobile terminal supports China Unicom 4G network; 3.The location has a 4G network covering China Unicom; 4.The number card is a USIM card.

If it's okay, Huaizhi can try to shut down and restart, or call ** directly to contact the operator.

You can check the situation first, and the following can be used for reference! 1.Make the file use 4G** or ** has opened the 4G network function.

2.The mobile terminal supports China Unicom 4G network; 3.

The location has a 4G network covering China Unicom; 4.The number card is a USIM card.

If it's all right, you can try to shut down and restart, or call ** directly to contact the running limb land business. Hope mine helps you! Hope.

Hello, there may be the following reasons! 1. First of all, it is necessary to make sure that the mobile phone has a network, and it is recommended that it can be used in a place with a stronger signal. 2. Then check whether there is still a phone bill, if the balance is insufficient, you need to recharge and restart it to use.

3. Check whether the SIM card is inserted, if it has been inserted but still cannot be used, it is recommended to go to the blind dust business hall to check whether the SIM card is faulty or change the card for testing. 4. If the traffic usage reaches the cap value in the current month, the network will be automatically shut down, it is recommended to pay attention to the SMS reminder or query the **product description. 5. If the problem still exists, you can bring the purchase invoice, repair card and machine to the service center, and the professional after-sales engineer will help you test.

Summary. Hello, China Unicom King Card is a kind of mobile data traffic demand for users launched**, which contains more high-speed traffic, but after using a certain amount of high-speed traffic, it will be limited in speed. If you need to continue using high-speed data, you need to top up.

Users can go to the nearby Unicom business hall, provide the corresponding mobile phone number and identity certificate, and then select the ** that needs to be recharged to recharge. 3.Purchase a China Unicom data recharge card to recharge.

Why did China Unicom King Card suddenly become 3G?

It was fine last night, but it turned on the phone this morning and it became like that.

And then the other card is telecom, and that's normal.

Dear, hello, thank you for your consultation, Gao Cover Guan pretends to argue with your questions, and answers the following for you How much does your Unicom King Card traffic use, dear, when the use of King Card traffic reaches the upper limit, it will be a shortage of speed limits, from 4G network to 3G network.

Well, 200GB is now only 16GB

That's going to ** to recharge.

For China Unicom King Card, the speed limit rule is that when the user uses more than 30GB, the network speed will be limited to 1Mbps per day, and after the monthly traffic reaches 50GB, the speed will be limited to 512Kbps. This speed limit rule is applicable to all Unicom King Card users, whether new users or old users.

But I didn't go over it.

The traffic data you use is subject to the operator's data.

Hello, China Unicom King Card is a kind of mobile data traffic demand for users launched**, which contains more high-speed traffic, but after using a certain amount of high-speed traffic, it will be limited in speed. If you need to continue using high-speed data, you need to top up. To recharge the high-speed traffic of Unicom King Card, users can do it in the following ways:

1.Recharge on the official website of China Unicom or the business hall of China Unicom mobile phone. Users only need to log in to the official website of China Unicom or the **China Unicom mobile business hall app, and select the corresponding ** to recharge.

2.Go to the Unicom business hall for offline recharge. Users can go to the Unicom business hall near Xianzai, provide the corresponding mobile phone number and identity certificate, and then select the ** that needs to be recharged to charge the Wang value.

3.Purchase a China Unicom data recharge card to recharge. Users can go to major supermarkets or convenience stores to buy Unicom traffic recharge cards, and then call Unicom customer service** or recharge through Unicom's official website.