VivoX5M can t open 4G

What kind of model are you consulting? Necessary conditions for mobile phones to use 4G networks:

1. The mobile phone needs to support 4G network standard, such as TDD-LTE or FDD-LTE;

2. The location has 4G network coverage and good signal;

3. Purchase the corresponding standard of 4G (China Mobile Unicom Telecom)** card and open 4G network data** for use;

4. You need to go to the mobile phone settings - mobile network - network mode and select 4G (priority) 3G 2G to use.

Based on the description, it is recommended to try the following methods:

1. Whether the SIM card of the mobile phone is a mobile 4G SIM card, and whether the 4G data is enabled**.

2. Whether there is 4G network coverage in the environment.

3. Go to Settings - Network - Network Mode, select 4G (Priority), 3G 2G.

4. It is recommended to try a different SIM card, or you can update the system version to optimize the system to try: click Settings - More Settings - System Upgrade - Check for updates immediately, according to the prompts**Upgrade package, click Verify and install, the phone will restart and automatically enter the upgrade mode.

If you try the above methods or can't solve the problem, it is recommended to go to the after-sales service center to check the phone, please rest assured, the technicians of the after-sales service center will properly deal with the problems encountered by the mobile phone, you can check the address of the after-sales service center in the settings of the mobile phone - more settings - after-sales service menu.

If you are using a mobile network (that is, the traffic of the mobile phone card) to surf the Internet: in the case of confirming that the mobile phone card you let Cha have no arrears and the local network conditions are normal, you first need to turn on the data, and slide the shortcut bar on the mobile phone to find the data network and click to open it. After opening, the G or E icon for Internet access needs to be displayed at the top of the screen, if it is not displayed, you can turn the phone on and off again If you still can't access the Internet, it is recommended that you restore your phone to factory settings to try:

The method of factory reset closure: go to Settings - More Settings - Restore Factory Settings - Restore all settings on it, and restoring all settings will not lose the Tantai data in the phone. If you still can't access the Internet after trying the above operations, it is recommended that you upgrade your mobile phone before using it.

You can upgrade through wifi**: Settings -> System Upgrade ->Check for updates immediately-, according to the prompts**Upgrade package, click Verify and install, and the phone will restart and automatically enter the upgrade mode.

Necessary conditions for mobile phones to use 4G networks:

1. The mobile phone needs to support 4G network standard, such as TDD-LTE or FDD-LTE;

2. The location has 4G network coverage and good signal;

3. Purchase the corresponding standard of 4G (China Mobile Unicom Telecom)** card and open 4G network data** for use;

4. You need to go to the mobile phone settings - mobile network dual SIM and mobile network - network mode, select 4G (priority) 3G 2G to use.

It's a 4G card, it's OK Mine is X5L 4G has been happily playing Settings In the network settings, there is a 3G or 4G priority option Oh You can go and see if there is no 4G set up I hope to adopt Thank you.

This model can use China Unicom card, but it does not support China Unicom 4G network.

The networks supported by this model include mobile 4G, 3G, 2G, and China Unicom 2G.

I'm also vico, and it's the same situation as you. Ask the great god for advice. I'm x9

Hello! Based on your description, we recommend that you try the following:

1. Whether the SIM card of the mobile phone is a 4G SIM card, and whether the 4G traffic is enabled**.

2. Whether there is 4G network coverage in the environment.

3. Go to Settings - Network - Network Mode, select 4G (Priority), 3G 2G.

If you try the above methods and still can't help you solve the problem, it is recommended that you go to the after-sales service center to test your mobile phone, please rest assured, the after-sales service center technicians will properly deal with the problems encountered by your mobile phone, you can check the address of the after-sales service center in the mobile phone settings - more settings - after-sales service menu. You can also go to vivo official ** to check the address of the after-sales service center: