What is Dual 4G mode in Xiaomi: problems with mobile Internet connection

Over time, when smartphones capable of providing a connection to the global network appeared on the mobile technology market, their popularity began to grow sharply. One of the companies that has become mega popular today is Xiaomi. That is why many people began to worry about the question of how to set up mobile Internet on Xiomi. This material will talk about this in detail, as well as what to do if the Internet on your xiaomi phone disappears, how to enable 4g on xiaomi redmi and how to disable 4g on xiaomi.

Mobile Internet connection

Before you enable the transfer of mobile data over the Internet, you should remember some points regarding the details of the mobile Internet connection:

To carry out the transfer, you will definitely need a SIM card, because services for providing access to the 3G/4G LTE network are tied to it. You can purchase it from any cellular operator by ordering online or by visiting the service office yourself;

In addition to the SIM card, you must have a service package connected and linked to it - a tariff plan. It is he who determines the price for services, as well as such parameters as Internet speed and the amount of traffic;
Having two SIM cards, you will need to connect calls, SMS and Internet services separately for each, even if they are from the same provider. To do this, in the Xiaomi settings you can select the card that is currently being configured.

Important! If you use up the traffic that is indicated in the tariff plan at zero, then an additional fee will be charged for further use of network access services. The operator will turn off the available traffic, and the shutdown will affect the availability of the network.

In order to understand how to connect the Internet on Xiomi, you should consider the list of available methods:

Activate 3G/4G LTE icon;
Enable automatic configuration;
Request configuration data from your mobile data provider;
Configure all parameters manually;
Configure exactly 3G or 4G networks.

All of these methods are worth considering.

Basic functions for Internet distribution

The default settings for most phones are the same. But it’s still better to understand the parameters, then it will be easier to organize uninterrupted operation.

Network name. It can consist of any symbols, letters and numbers.
Security protocol. When you install it, you will be able to share the Internet only with those users who have been given a password. Otherwise, unauthorized access is prohibited.
Shutdown intervals. This feature is important for those who want to save on traffic and battery costs. It is assumed that when there is downtime in using the network, data reception and transmission will be automatically turned off. Standard intervals are 5-10 minutes. In this case, it will not be possible to distribute the connection without additional actions.

Note! Wi-Fi access point users" is a column that deserves special attention. After all, strangers can connect to the gadget, and traffic is paid in most cases

It is better to carefully monitor how and why the information transmitted via such a connection channel is used. And passwords do not always provide reliable protection, since they can simply be passed on to friends and acquaintances, who then communicate them to other people.

Setting up mobile internet on Xiaomi

If once upon a time a person already used the mobile Internet, then the phone could remember the necessary parameters. He can also restore them, and on his own. To do this, you simply need to click on the menu or pull it out if it is located on the notification shade. Next, the icon is simply activated, which can be called completely differently from version to version and from shell to shell (MIUI). Among the popular names are “Mobile Internet”, “Data transmission”, “Internet”.

How to set up a Xiaomi Router 3G wireless router

Method number two is automatic setup. This is done like this: the phone is turned off, the SIM card is removed from it. After which it is inserted again and only then the smartphone can be turned on. When turned on, it will begin to search for the operator’s network (this also applies to the router’s network) and will pick up the signal. If mobile data transfer has been turned on, you will also be able to connect to the Internet. If this does not help, then you need to restart your device and try to enable network search using other methods.

The request to the telecom operator is the third priority item. Not all models of Chinese Xiaomi phones can automatically receive all the necessary parameters. If the user is the owner of one of these models, then there is no need to be upset, because you can request the settings from the operator. To do this, you can call support and explain your problem. After this, the operator will show you how to set up the phone or send an SMS message with all the necessary parameters. A person will only need to accept and save them. After this, it is important to restart your phone.

Important! You can do the setup yourself, as this is considered the fastest and most reliable way. Also, manual setup will allow you to figure everything out yourself and put these skills in your head.

Turn airplane mode on and off

Airplane mode disables all Xiaomi wireless interfaces to prevent them from potentially interfering with sensitive aircraft equipment.

This option at the operating system level disables the cellular network, and therefore enabling and then disabling this mode can eliminate software problems that could arise during the operation of the Android operating system.

Turn on the mode, wait one minute, then turn it off and see if LTE reception appears as reliable as it was before. If this procedure does not help, move on to the next tip.

How to make manual mobile Internet settings

Features of connecting and setting up Wi-Fi cameras for Xiaomi surveillance

As already mentioned, manual settings will help a person understand the problem and avoid making any mistakes in the future. To play them you need:

Find an icon in the menu of your device that says “Settings” or “Options”;
Select it by tapping on the icon;
Open the “Mobile data transfer” or “Sim cards and networks” window;
Select one of the cards if two are installed;
Activate the mobile data function;
Go to the “Access Points” window;
Add a new access point;
Fill in the parameters of the new point;
Save the settings and restart the mobile phone to finally accept them.

They are different for different operators:

Beeline: APN access point - “internet. beeline.ru", password - "beeline";
MTS: access point - “internet.mts.ru”, password - “mts”;
Megafon: access point - “internet”, username - “gdata”, password - “internet”;
Tele2: access point - “internet.tele2.ru”;
Yota: access point - “internet.yota”.

In addition to the name of the access point, the access point itself and the password, something is filled in in very rare cases and you cannot add or change any parameters yourself. What you have entered is already enough to restart the phone and connect to the global Internet.

Answers to popular questions

Yes, it's quite possible. There are times when, if the signal is very low, you will be asked to switch to 2G. There are several reasons for this situation. The first and most trivial thing is that the SIM card simply came off. Remove the back cover (or slot) of the phone and insert it correctly. Secondly, the integrity of the SIM card has been compromised. Then you need to either buy a new one or the help of an experienced technician. Write to us in the comments. We will try our best to help you resolve the conflict.

Now, to connect a Xiaomi smartphone to a mobile network, you don’t need to search for the latest instructions for a long time, just read our article. Do not forget that in case of problems with the tariff package or the SIM card itself, you can contact your operator. Online consultations, telephone consultations, and personal consultations are available when visiting a service center.

How to turn on 4g

How to set up Internet on a Xiaomi router with 4G modem support

Sometimes people ask what to do if there is no connection on xiaomi note 4g. If you need to connect to a 4G network, you need to perform a number of steps in the form of step-by-step instructions:

Open the dialer and enter the following combination: “*#*#4636#*#*”;
A list will appear. In which you need to select the item containing “LTE”. Td-scdma is the Chinese name for 3G;
Press the “Back” key and return to the main menu screen;
Reboot your phone.

After this, the phone will connect to any available 4G network and the problem will be solved, but there are also failures. In this case, go to “Settings” and look for an item with mobile data transfer. Next, in its settings, you need to set the preferred network type to “4G”, then again to 3G, and then again to 4G. This change should force the smartphone to look for 4G networks.

If only https sites open

This situation implies that the Internet is still present on your Xiaomi. But it doesn't work fully as expected.

Possible reasons for data transfer “cut”:

For some reason, not entirely clear, the access point is damaged. Go into settings and check all the lines to the very end. Particular attention should be paid to the authentication method, the most common is PAP.
Another frequently encountered feature of reducing the incoming volume of information is hidden in the security settings. We go into traffic and set a monthly limit in MB. If desired, you can even adjust the daily limit. In addition, two options are defined for the device if the limit is exceeded.

In order to save money, excessive traffic can lead to disconnection from the mobile Internet or simply to a warning to the owner. Make the necessary adjustments yourself.

By the way, many custom firmwares suffer from one feature. Programmers who assemble and modernize system software are not averse to making fun of it. In our case, when the operation of the device in mobile networks suffers, this leads to the fact that the system/etc/hosts: file is so modified (it blocks advertising in the browser) that access to many resources is prohibited. You cannot completely delete the file, advertising will creep in from all the cracks and instead of Internet surfing, you will get an advertising flood.

To correct it, Root rights and Root Browser are required. See more details here.

Do not forget that after all the actions you have taken, the best way to complete setting up your phone is to reboot it.

Setting up 3g or 4g connection

It all depends on the quality and type of signal. Depending on these parameters, mobile networks are divided into:

Group G - the worst signal with a speed of 170 Kbps;
Group E - a connection that is slightly better than the previous one. It is 470Kbps;
3G group with a speed of 3.5 Mbit/s;
Group H - twice as fast as the previous one - 8 Mbit/s;
Group H+ - superior to all previous types - 42 Mbit/s;
4G LTE group - the fastest signal (100 Mbit/s).

With so many types and groups, it is difficult for a beginner to configure the phone so that it only receives the latest generation network signals. At the hardware level, everything works like this: when a phone finds itself in a particular region or part of it, it connects to the network that is available in it. If all are available, then the most recent one with higher speed is selected with priority. You can check this like this:

Go to the SIM card information section and open the section for the type of network used;
Here you can see all currently available networks;
Select your preferred connection type;
Save settings and exit. Just in case, you can restart your phone.

Causes of the problem

Damaged faulty SIM card
There are 5 reasons why Xiaomi smartphones do not connect to the network:

low mobile signal level;
the network type selected in the device settings is not suitable for the current location;
faulty SIM card or no contact with the slot;
The communication module firmware does not support the frequencies used by the operator;
automatic or manual update/replacement of MIUI firmware or communication module.

Before trying the following troubleshooting methods, it is recommended that you run the following general algorithm:

Disconnect the device and remove the SIM card slot;
Start your smartphone in fastboot mode by holding down the power and volume down buttons.
Reboot the device after the image of the phone and cable appears on the screen by holding the power button.
Insert the SIM card tray.

SIM card tray

Low signal strength and preferred network type

The phone uses radio waves of a certain frequency to communicate. As the frequency increases, the transmission range decreases. Therefore, the signal of 3G and 4G LTE networks is only good near a cell tower.

If the signal strength scale shows 1 division or a cross, then in such places it is recommended to reconfigure the smartphone to work in 2G networks: GPRS and EDGE.

This is done as follows:

Open “Settings” and go to the “SIM cards and mobile networks” or “Mobile networks” subsection.
Select the inserted SIM card in the “SIM card settings” block.
Go to “Preferred network type” and select “2G only”.

In this mode, the connection will be more stable, the device will work longer, but the mobile Internet will be slow - 0.15-0.2 MB/sec.

Faulty SIM card

Required materials:

vodka or medical alcohol;
cotton pad or cloth.

Cotton pad and alcohol

The functionality of the card is checked as follows:

Remove the chip from the phone and inspect it. There should be no visible damage on it.
Clean contacts with vodka and a cotton pad.
Insert the card into another smartphone.

If it cannot connect to the operator, then the SIM card needs to be replaced.

Otherwise, you need to check the status of the contacts in the slot. To do this, you will need the help of a phone repair shop.

The communication module does not support the frequencies used by the operator

Due to the fact that Xiaomi smartphones are sold all over the world, the firmware of the communication module does not include settings for working with a specific operator. They can be obtained in 2 ways: via the mobile Internet and from.

For the first method, the procedure is as follows:

Disconnect from your home Wi-Fi network and turn on mobile Internet using the problematic SIM card.
Open a website in your browser for 1-2 minutes.
Reboot your phone without turning off your mobile internet.
Wait 1 hour.

Wi-Fi and Mobile network buttons

Procedure for the second method:

In the standard “Phone” application, dial the combination # * # 4636 # * # *.
Click on the number of the non-working card in the engineering menu.
Select “GSM Only” in the “Set up network type” line.
Disable synchronization
Click “Apply” and restart your smartphone.

Firmware update failed

New versions of MIUI firmware add unfinished functions. Because of them, the basic functions of the device sometimes stop working correctly.

To restore the functionality of the smartphone, you will need to wait for the next firmware update or install the previous working version.

To summarize, cell tower signal reception problems are due to incorrect settings, random firmware glitches, and low signal strength.

Why doesn't my phone pick up an lte signal?

There are many reasons why a smartphone does not receive or has stopped receiving. The most common of them are:

The traffic on the tariff package is completely used up;
The signal may not be received indoors or may be received very weakly;
Older models may not have 4G support at all;
Lack of Internet as a tariff option. It's worth connecting another package.

Important! There may also be hardware failures in the phone. They are difficult for the average user to detect using software, but they can occur and disrupt the operation of the wireless adapter and SIM card.

Network disappears after update

A frequent picture. Numerous messages on forums that mobile communications stop working after updating MIUI indicate the importance of the problem.

Among other things, the device does not recognize SIM cards, even simple calls become unavailable. The reason lies in the flaws of the software itself; here are some tried-and-tested methods for solving this problem.

Roll back to the previous firmware that was installed before the update. And set a ban on new updates. Suitable for those who are not looking for easy ways and are immediately ready to make changes to unwanted software. Requires certain knowledge and orientation in the sea of all kinds of firmware.
Flash the modem itself. For any device there is a whole set of system files, including the radio module. From v36 to the last v Among the negative features of this method, we can mention complete ignorance about the final result. That is, when you get involved in this adventure, you will never be sure that it will end in success. There are no calculations about the performance of this or that modem. It all depends on your region and the characteristics of the mobile network. Simply put, it will look like this. Install the modem and see what happens. I don't like it, another one. And so on, until the bitter end.
Change preferences in settings. We are moving away from the preferred 4G standard, to 3G or even, just to check, 2G. To do this, go to settings - “About phone” - “Internal memory”. Click on it several times until “Phone information 1 and 2” appears. Here we configure the preferred network type. There should not be any TD-SCDMA in the name. For 2G - GSM only, 3G - WCDMA only, 4G - LTE only. Or a combination of these frequencies.
It would be a good idea to understand the frequencies stated in the device specifications. In Russia, the following bands are provided for LTE: B1/3/7/20. But not every Xiaomi has them in full. As an option, I offer the most common and stable 3G. The pursuit of speed turns into a paradox: everyone wants to use 4G, but the 3G band is free. I recommend using this, at least for a while.
Check IMEI. *#06# You enter this combination on the dialer, and the phone will indicate it to you. If there is nothing, then the device is not detected on the network in any way. That is, somehow (due to a broken firmware or an incorrectly installed update) your identifier has disappeared. Restoration required.

Internet does not work on Xiomi

If the Internet does not work, then the traffic may have been used up. Also, an antivirus or firewall, which is actively blocking the network, prohibited connecting to it. You can check this by clicking on Settings - Security - Traffic - Application Control. A list of restrictions will be displayed here. Once again, we can remind you that in any unclear situation, you can simply restart the phone and determine the network status.

In addition, it is important to make sure that the SIM card is active and working. To do this, you can install it in any other phone and check it. If the card picks up the network, including 4G, then the problem is with the phone.

Finding the cause of a mobile network problem

First, let's determine the reasons why the mobile Internet does not work. Most often these are software problems that can be resolved by properly configuring the device. If the problem is mechanical, a qualified technician will help.

Doesn't turn on initially

Have you purchased a new mobile device and it is unable to transfer data? It is possible that you were sold a defective phone. To avoid such unpleasant situations, buy electronics from trusted sellers on foreign websites, or choose good local stores.

If you cannot turn on mobile Internet on your new device, carefully read the following points and follow the recommendations. Not a single method helped activate the Internet? Then immediately contact the store and request repair/return of your smartphone .

Poor signal reception

The coverage area is to blame here. Usually there are no problems in the city center, but on the outskirts, in towns and in nature, the quality of mobile communications deteriorates significantly : the Internet freezes, pages do not load, and it is impossible to download materials from the Internet.

Special attention should be paid to the 4G standard, which is not available in all regions. The solution here is simple: switch to 3G (H, H+) , and also study the coverage map of your area. Such materials are always posted on the operator’s official website.

You can read more about all generations of mobile telephony on Wikipedia.

Doesn't work after updating/independent firmware

Mobile communications may be intermittent if you have upgraded to a new version of the operating system or firmware. With an official update via Three Points, such problems usually do not occur . The exception is developer builds, but there the problems are fixed by the developers quite quickly.

What to do if the mobile Internet does not work after manually updating Xiaomi (for example, using MiFlash)? A radical solution is to reflash again or roll back to the previous version. Less drastic options described in the next section will also help you.

Problem with SIM card operator

It is possible that there are certain problems currently occurring in the network, and specialists will fix them in the near future. If you do not find any abnormalities on your device, contact the operator and present the presentation.

Phone settings are lost

And the most common reason is that the settings in the smartphone that are responsible for the smooth operation of the mobile network have gone wrong . For example, the wrong communication generation has been selected, a new access point is needed, or the traffic limit has been exceeded.

You will learn below how to cope with such troubles. Let's say in advance that all responsibility for the actions taken lies only with you . If you are not confident in your skills and knowledge, it is better to immediately contact a specialist.

Operator side failure

In rare cases, the Internet disappears from a Xiaomi smartphone according to the operator due to a line failure or incorrect settings of base stations.

In order to find out about an accident on the operator’s side, call the hotline, wait for a response from a live person and ask if they have problems with the Internet in the place where you are now.

In addition, even if there is no accident, support can help you determine the reason for the lack of Internet if it occurs for mystical reasons.

YOTA – 8 800 550 00 07
Beeline – 8 800 700 06 11
Megafon – 8 800 550 05 00
MTS – 8 800 250 82 50
TELE2 – 8 800 555 06 11

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Change SIM card (micro- or nano-SIM)

Most often, problems with accessing the Internet arise due to problems with the SIM card itself. Different Xiaomi smartphone models require different cards. More modern models most often use 2+1 technology. That is, you can insert two SIM cards into the phone: micro + nano, or insert a micro SIM card + SD Card (flash drive with additional memory).

If the problem is with the SIM card, it makes sense to try moving it to a slot of a different size.

At any service point of your operator, the SIM card should be replaced free of charge.

The advantage of replacing it in the cabin is that the SIM card remains with a plastic rim into which, if necessary, it can be inserted to change the size for another slot.