vivox9 only has a 3G network?

The vivo X9 only has a 3G network probably** Card arrearsThe system data is abnormal, the network mode is not setG preferred, localThe network is unstableand other factors.

You can try the following methods to solve the problem:

OneCheck with your carrier** card if there is any arrears

Second, enter the settings of the mobile phone - detect and merge in the system upgradeUpdate your phone's system version

Steps:

1. Go to the "Settings" of your phone

2. Select "System Upgrade".

3. Check and update the system version.

3. Check whether the network mode is set to4G preferred.

Steps:

1. Click "**" to enter the dialing interface.

2. Enter * on the dial-up screen

3. Click "Network Mode" and select 4G priority.

FourthChange the positionThen use observation.

FiveReplace the SIM cardTry it.

6. Bring your mobile phone to the local areaAfter-sales service centerConduct a comprehensive approachDetection, web links.

It is recommended to go to the after-sales before first**InquiriesThe actual working time of the after-sales service is to avoid running in vain.

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

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.

After all, the signal is not good, don't be capricious.

Hit the customer**, or go to see after the sale!

vivo X9 is a full Netcom + mobile phone, which supports 2G, 3G, and 4G+ networks of China Mobile Unicom Telecom.

The vivo X9 model has two versions: X9 Full Netcom and X9L Mobile Customization, and the configuration of these two phones is comparable. vivo X9 Full Netcom Edition: Support China Mobile, China Unicom, and Telecom SIM cards; The data network can be manually switched through the settings, and card 1 and card 2 can be arbitrarily set as network cards; It does not support the simultaneous use of two telecom cards;

vivo X9L mobile full Netcom version: support China Mobile, China Unicom, and China Telecom SIM cards; If you use a mobile card and a non-mobile card (China Unicom or China Telecom card), the mobile card will be automatically locked as a network card and cannot be modified through settings. If you use two mobile cards or two non-mobile cards (China Unicom card, China Telecom card), you can manually switch the data network through the settings, and arbitrarily set card 1 and card 2 as network cards; It does not support the simultaneous use of two telecom cards;

1. First of all, on the main screen of the mobile phone, click to open the "Settings" icon of the app or the companion program to enter the detailed panel of the app.

2. After going to the detailed panel of settings, select the "Mobile Network" column and click to enter the detailed panel.

3. After going to the detailed panel of the mobile network, select the "Network Mode" column and click to enter the detailed panel.

4. After clicking "Network Mode", the option to set the network priority will appear, select "3G (Priority)".

vivo x9sToggle the 2G 3G 4G network mode method: Go to Phone Settings - Mobile Network - Network Mode and select ".4G (preferred) 3G 2G"Or".3G (Preferred) 2GThat's it.

Steps:

1. Click Settings on the standby desktop.

2. Mobile network.

3. Network mode.

4. Select4G (preferred) 3G 2G"Or".3G (Preferred) 2GThat's it.

Note: If you use a mobile card, you can enter the **program, enter "* *" in the dialing interface, enter the network mode, and select the mobile phone 3G priority or only 2G.

vivo x9It's all Netcom+Mobile, supportedChina Mobile Unicom 2G, 3G, 4G+ network

Additional note: vivo x9 is this modelThere are two versions: X9 Full Netcom and X9L Mobile Customization, both phonesThe configuration is quiteTarget.

vivox9 full Netcom version: Support Mobile, China Unicom, Telecom SIM card; The data network can be manually switched through the settings, and card 1 and card 2 can be arbitrarily set as network cards; It does not support the simultaneous use of two telecom cards;

vivoX9L Mobile Full Netcom Edition: Support Mobile, China Unicom, Telecom SIM card; If you use a mobile card and a non-mobile card (China Unicom or China Telecom card), the mobile card will be automatically locked as a network card and cannot be modified through settings. If you use two mobile cards or two non-mobile cards (China Unicom card, China Telecom card), you can manually switch the data network through the settings, and arbitrarily set card 1 and card 2 as network cards; It does not support the simultaneous use of two telecom cards;

Steps:

1. Click Settings on the standby desktop.

3. About mobile phones.

4. Distinguish between models.

If you want to use China Unicom's 4G network, you also need to use China Unicom's 4G mobile phone**, otherwise you can only use 3G network.

3G is the abbreviation of "3rd generation mobile communication technology" (English: 3rd generation), that is, IMT-2000 (International Mobile Telecommunications-2000), which refers to the cellular mobile communication technology that supports high-speed data transmission. 3G services are capable of transmitting both voice (calls) and messages (e-mail, real-time communication, etc.) at the same time.

The representative feature of 3G is to provide high-speed data services, and the rate is generally more than several hundred kbps.

3G mobile phone is based on mobile Internet technology terminal equipment, 3G mobile phone is completely the product of the integration of communication industry and computer industry, and the difference between the previous mobile phone is too big, so more and more people begin to call this new mobile communication product "personal communication terminal".

Even the most amateur in the communications industry can easily tell if a phone is "third generation" by its appearance: third-generation phones have a large color display, often touch. In addition to completing high-quality daily communication, 3G mobile phones can also carry out multi-** communication.

Users can write, draw, and transmit it directly to another phone on the 3G phone's touchscreen display, which may take less than a second.

3G communication is the introduction of mobile communication services in the mobile communication market through the first generation of analog technology, and has been introduced into the agenda in the vigorous development of the second generation of digital mobile communication market. In today's rising Internet data services, in the context of the continuous improvement of fixed access rates (HDSL, ADSL, VDSL), 3G mobile communication systems have also seen the dawn of the market, and have become more and more concerned by telecom operators, communication equipment manufacturers and ordinary users.

To use China Unicom's 4G network, not only must the mobile phone support the Unicom 4G network, but also use China Unicom's 4G mobile phone**, otherwise you can only use the 3G network.

1. First of all, on the home screen of your phone, tap to open the "Settings" icon of the app to enter the app's detailed panel.

2. Next, after going to the detailed panel of settings, select the "Mobile Network" column and click to enter the detailed panel.

3. After going to the detailed panel of the mobile network, select the "Network Mode" column and click to enter the detailed panel.

4. After clicking "Network Mode", the option to set the network priority will appear, select "3G (Priority)".

Vivo X9 mobile phone useMobile card set up 3G network partyMethod: Enter " in the dial pad####--In network mode, select 3G (preferred) 2G.

Steps:

1. Standby desktop entry**.

2. Enter " in the dial pad####

3. Network mode.

4. Select 3G (preferred) 2G.

The vivo X9 mobile phone is a full Netcom version, which supports the use of telecom 4G network; However, it does not support inserting two telecom SIM cards in the phone at the same time.

It is recommended to go to the official website of vivo - X series - x9 to view the details of parameter information.

Hello yes, vivo X9 is a full Netcom phone that can support 2G 3G 4G networks from the three major operators.

Yes Full Netcom Mobile.

Open the Settings menu – select Mobile Network.

2.Once you're on the secondary menu, don't rush. Step by step, click on the carrier first.

3.When selecting a carrier, you can select it automatically or turn off automatic manual selection.