Samsung S7898 mobile phone 3G network how to adjust to 2G network

The method of switching the network of Samsung S7898 mobile phone 2G 3G is as follows: Standby - Application - Settings - More Settings (More Network) - Mobile Network - Network Mode, and then select according to your need.

Note: Telecom and mobile customized machines (3G mobile phones) do not support 2G 3G network switching, the default preferred 3G network, when the area is not covered by 3G signal, it will be automatically converted to 2G.

Go to the business hall to turn off the 3G function.

1. Reason: When the surrounding signal is not good, the mobile phone will automatically switch to the 2G or 3G network.

Solution: Look for the surrounding area with a good signal.

2. Reason: One of the card slots of Samsung S8 can support the 4G 3G 2G network of China Mobile Unicom Telecom, while the other card slot only supports the 2G network of China Mobile Unicom Telecom.

How to deal with it: Take out one of the cards.

1. Samsung S8 S8+ inherits the IP68 dustproof and waterproof function of the previous generation; It supports fast charging and wireless charging.

2. There are many benefits of a full screen, not only limited to showing off skills. According to the size of the screen in the entire mobile phone, the Samsung S8 series screen-to-body ratio is as high as 84%, and the ratio has been changed from the traditional 16:9 to::

9. It can reduce the black edge of watching movies on the mobile phone, the visual effect is better, and the multi-task operation experience on the same screen is also better.

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, and the ** speed limit is used, and the traffic used in the current month reaches the speed limit threshold, and the speed limit occurs.

You can check whether the above conditions are met, and you can use the China Unicom 4G network only after they meet the requirements.

Samsung S8 S8+ will be launched on May 18, 2017 and will be officially launched on May 25, 2017.

In addition, from May 10, 2017, the reservation activity will be opened, and there will be gifts for store reservations and online reservations.

For more information about the event, please visit Samsung's official website.

If you want to know that Samsung S8 is a full Netcom dual SIM phone, card 1 card 2 all support mobile, China Unicom, China Telecom 2G 3G 4G network.

Note: When inserting two SIM cards, one of the card slots can support the 4G 3G 2G network of China Mobile Unicom Telecom, while the other card slot only supports the 2G network of China Mobile Unicom Telecom (when one card is China Mobile and China Unicom 4G network, the other card supports up to China Unicom 3G network voice call), but the two telecom cards cannot be used at the same time.

S8 Set 2G 3G 4G network switching method: Settings - Connection - Mobile Network - Network Mode (SIM1 SIM2) - 4G, 3G, 2G Auto Connect 3G, 2G Auto Connect 2G only.

Note: 1When one card is China Mobile and China Unicom 4G, the other card supports up to China Unicom 3G calls, but the two telecom cards cannot be used at the same time.

2.When switching cards to surf the Internet, the mobile data will be changed to 4G, 3G, and 2G by default. If you want to change the network mode, please switch the card to the Internet and change it in the network mode.

3.When using a mobile card, changing the network mode is not supported; China Unicom Telecom can choose the network mode.

Hello dear Samsung users:

According to your description, this model phone supports mobile 3G network. If you need to use a 3G network, you need to insert a mobile phone card to use it, if you can't search for a mobile 3G network. We recommend that you try the following steps:

1.Turn your phone on and off again.

2.Try changing a SIM card.

3.Update the system version of the phone to see if there is any improvement.

4.Back up your phone's data (**book, SMS, multi** files, etc.), restore factory settings, if the problem still exists, it is recommended that you send your phone to the nearest Samsung service center for testing and repair, and it is recommended that you make an "appointment to the store" repair application on Samsung's official website to enjoy priority repair service

After the appointment is successful, please bring your machine, invoice and warranty card to the service center where you made the appointment on time.

Comments, suggestions, complaints, please click:

Dear Samsung users:

2G network is generally suitable for calls, and 3G and 4G are suitable for network data connection.

If your Samsung S7 phone can't make calls**, it is recommended that you:

1.Check to see if your phone is in airplane mode.

3.Check if you have enough balance on your phone.

4.If you can dial certain fixed numbers, check whether the fixed dialing function is enabled, and it is recommended to disable this function.

Note: Pin2 code is prompted when fixed dialing is disabled, and you need to contact the network operator for consultation for this password.

5.Check if the call restriction feature is set up. If so, please cancel and try to dial**.

6.Replace it with a different SIM card.

7.Back up your data (contacts, text messages, **, etc.), factory reset.

If the problem persists, it is recommended that you bring the purchase invoice, warranty card and mobile phone to the local Samsung after-sales service center, and a professional engineer will help you test it.

Hello dear Samsung users:

If the mobile phone tablet cannot connect to the 3G network, it is recommended that you verify whether the device supports the 3G network, and if so, you can verify the following information:

2.Verify that the device's 3G network mode and the SIM card used match. For example, if your device supports Changjian in China Unicom 3G network mode, you need to insert a China Unicom card to achieve 3G services.

Note: Some mobile and telecom customization machines do not support changing the network frequency band.

4.If the 3G network signal is weak or the 3G network is not covered, the device will not be able to connect to the 3G network.

5.Try to change another SIM card.

Comments, suggestions, complaints, please click:

1.If you are using a non-4G phone, you will not be able to use the 4G network.

2.If you are using a 4G phone:

1).You need to use a SIM card that supports 4G services and have opened 4G services in your local area.

2).Different models support different 4G networks, so you need to choose a 4G card that is suitable for the model you are using. For example, G9006V supports China Unicom 4G network, G9008V supports mobile 4G network, and G9009W supports China Telecom 4G network.

3).You need to turn on the 4G network, operation: Settings - Connection - Mobile Network - Network Mode - 4G 3G 2G (Auto Connection) (If the local coverage of 4G network, the phone will automatically switch to 4G network).

This model is not listed in the mainland, and the specifications of the relevant operations and accessories will be different from the models listed in the mainland, but you can also refer to the relevant information of similar models listed in the mainland and similar problems.

If your phone needs to use data to surf the Internet, here's how to do it:

Pull down the top curtain of your phone, tap [Mobile Data] and [Data Connection] to make it green to indicate that it is on.

If you are unable to access the Internet with data data, we recommend that you try the following steps:

1. Check whether the SIM card is enabled for GPRS Internet service or temporarily closed.

To use the mobile phone data Internet function, the ** card needs to activate the data data Internet service. You can contact the local network provider of **card** to open the data traffic Internet service.

2. Check whether the "Mobile Data" switch is turned on.

Slide your finger down on the top curtain of the screen and turn the "Mobile Data" dot green.

3. Please try to replace it with another ** card.

4. You can also try again in a different time period or network environment.

5. Back up your phone's data (**book, SMS, **, etc.), restore your phone to factory settings, if the fault persists, it is recommended to send your phone to the nearest Samsung service center for testing and repair.

You go to the settings, there is a data network point, there is an access point name, create a new APN, change it to cmnet, and leave the rest blank to connect.