Enable 3g on android lg. None of the methods helped. Internet access without settings

Tablet devices have been successfully promoting in the computer device market for more than 4 years, and their popularity is only growing every day. However, the rapid growth of technology leads to the fact that manufacturers completely forget to additionally issue specialized instructions for the operation and settings of a particular module. That is why the questions of how to set up 3g on a tablet or why there is a disconnection occur with ordinary users more and more often.

Varieties of 3G connectivity

Striving for leadership in the tablet device market, manufacturers are trying with all available forces to distinguish their gadgets among similar ones. Each of them undertakes its own strengths and capabilities, which is why, in the end, we get the most saturated and diversified market.

There are three possible ways 3G connectivity:

  • Built-in is when the slot is installed directly into a touchscreen gadget, like in smartphones;
  • External wired - an ordinary USB modem that works in mobile networks;
  • External wireless - connection is made through Wi-Fi network and on very rare occasions using Bluetooth.

Wired modem

This type of modem was and remains one of the most popular in the world, found its widespread use immediately after the release of the first laptops and netbooks. When wired Internet was not so widespread and sometimes 3G remained the only way.

Huawei e3272 is a modern network equipment that allows using the resources of not only 2G / 3G networks, but also working in LTE (fourth generation), while providing speeds up to 100 Mbps. Tested for compatibility with all popular mobile operators in Russia. In addition, it allows you to go online and abroad, simply using the services of a local cellular company.

Wireless modem

ZTE AC30 is a simple and easy-to-use 3G Wi-Fi modem that works according to the principle:

  • Received signal via 3G network;
  • And distributed the received resources over Wi-Fi.

The advantages of such devices over conventional USB are:

  • Lack of any external wires - wireless connection;
  • Automatic configuration of network connection;
  • Small size and ergonomic design.

A small display is used to check if the modem is active, where you can see the current connection status, signal strength, battery power and 3G availability.

Setting up a mobile network

The complexity of the setup depends on which method of accessing mobile network resources you use. Let's start with the simplest and move on to the more complex ones. Which one is right for your device - you can determine in the process of studying the material.

3G Wi-Fi connection

This is one of the most simple ways get access to the mobile Internet, which does not require any specialized knowledge from the owner of the tablet device. First of all, you need to buy a network device and find a pleasant service package for your region.

Then insert the SIM-card into the slot allocated for it, it can be hidden under the battery, as in this case, or be outside on the device's case. After installation, press the "Power" button to start the modem and wait until the automatic setup takes place, only then you can start connecting.

Gadget settings menu

Turn on the tablet and launch the general settings menu on it, where in the list of parameters we find "Wi-Fi" and click on it, along the way, move the slider to the active position, as shown in the image. Wait until the scanning process is over and dots appear: we find our 3G modem and connect by entering the password in a special field.

The name of the point and the password from it can be found at back side modem, where the sticker is glued, in some models the information may be indicated on the box or on a separate card.

During the connection, you will be allocated a network address, and after the word "connected" and the network icon appear in the notification panel, you can close the settings menu and go to Internet applications.

Built-in 3G

When setting up the built-in 3G module, you will have to make a little effort, so first we insert the SIM card and reboot the device, after which we launch the settings menu and follow the prompts in the images below.

Mobile network

After opening the settings, select the "More" option and then "Mobile network" in the right window.

Connecting to the network

At this step, be sure to check the box opposite the "Data transfer" item and go to the access point parameter. In the window that opens, through the additional menu, create a template for a new point.

Point creation

For the connection to work correctly, it is necessary to fill in the list of parameters with the necessary data, which are presented on the operator's website. However, for the convenience of users, the data of cellular operators were collected in a single table, which is located just below.

Point pattern

After entering, save the point and restart the system. Only now we turn on the data transfer again in the quick control panel and you can go to surfing the Internet.

Operator APN User Password
MTS internet.mts.ru mts mts
Beeline internet.beeline.ru beeline beeline
Tele2 Internet internet.tele2.ru Empty Empty
Megaphone internet gdata gdata

If it was not possible to connect, it means that some information was missed at the point creation stage, repeat everything from the very beginning.

If your tablet supports calls and messages, then you can order automatic settings through the operator's website or directly by calling the support service.

Setting up a USB modem

Android is a specific system that does not support the standard Plug and Play technology, and therefore simply plugging in a modem and starting to use it right away will not work. To do this, you must first download the free application 3G Modem Mode Switcher for ZTE and Huawei

Desktop

After downloading, run the utility, remove the SIM card from the modem and connect it to the computer. In the program for correct work modem, you should only press the modem, which is actually what we do. After completing the process:

  • Close the application window;
  • Disconnect the modem;
  • Put the SIM card back in place and connect the modem to the tablet.

The connection is made through a special cable, which must be purchased by yourself. As soon as the modem is connected, go to PlayMarket and download the utility: PPP Widget, which will help you configure an external network device.

Main program window

After installing the utility, a widget will appear in the application menu or on the desktop to launch the settings. Please note that the settings will be the same as for onboard 3G, except for one detail.

In the "Dial number" item, you must specify: * 99 #, by default for all operators. Also, save and exit, where by pressing the Connect button on the widget, start the mobile network.

Problems when setting up 3G

  1. Continuous disconnection. Most likely, mobile operator carries out preventive work or worsening weather conditions is observed on the street.
  2. The tablet does not see the modem. Try to connect it to another device, if everything works fine, the cable may be damaged or the devices are incompatible.
  3. Doesn't connect to the internet. Check your balance, perhaps access is blocked due to a negative account or the data was entered incorrectly - check them again.
  4. The wireless modem is not working. The battery is most likely discharged, so plug it back in immediately.
  5. The modem does not turn on. Charge, if the indicators are off, it means that the device is out of order, unfortunately, its repair will cost as much as a new modem.

Nexus and USB tethering

23.12.2017

Today, 3G time is the most common type of Internet connection on Android devices. The main advantages of enabling 3g on Android are mobility, 3g coverage is increasing every day and is becoming very popular.

However, there are also small disadvantages:

  • Price, although in principle this is a conditional minus;
  • The transfer speed, well, like everywhere else, everything is different and not always good, unfortunately;
  • Unscrupulous, who promise you an unlimited tariff, but as soon as a certain amount of traffic is consumed, they reduce the speed to a minimum.

But in general, 3g connection is the most common and convenient way to connect to the world wide web on smartphones, despite these disadvantages.

Make sure you have a good, reliable network connection. If you receive a “No route available” message, try connecting to another station, try connecting later, or test an open proxy instead of a relay. Don't try to connect. This does not work in most cases. 😉 Do not use direct mode unless you have implemented appropriate port forwarding rules in your router. If you have a flat rate fee with your carrier, there is probably no additional charge.

It's audio streaming, and it works over packets of data - that is, regular internet translation. If you have any doubts, please contact your mobile operator. Unfortunately, these platforms are very different from each other, so software development for everyone will involve four separate developments. There are currently no projects to develop versions for other mobile platforms. Is the wireless internet a little slower? Or maybe you just want to squeeze even more energy out of your connection?

3G setup

Let's take a closer look at setting up and enabling 3g connection on Android.

First, you need to find out two things: whether your operator provides such a service and whether you have money on your account. It is necessary to contact the Call-center of your operator and there you will receive complete information.

Let's immediately consider two types of connection 3Gin Android:

If so, we have a great solution for both rooted and disorganized people. If we don't have a root, we have the "Improve Internet Connection" option at the bottom. It changes as much as the system allows with normal user permissions. The optimization should be visible, but not as good as the first option.

Updating the firmware can solve the problems that the previous firmware version may have and improve the current performance. Check the hardware version of the device for the corresponding firmware version. Product damage caused by using third-party firmware will void your warranty.

  1. The access point is found automatically;
  2. Self-creation of an access point (manually).

Automatic tuning

So, have you decided to find your hotspot automatically? Let's go to the device menu, "Settings", then "Wireless" and "Mobile network". We find the submenu "Telecom operators", here the search for a telecom operator will automatically start. If your operator has appeared - we press “Choose automatically”, if not - we choose from the list ourselves. A little later, the network settings will be added automatically.

Open source for programmers

When it's not a week without a cyber giant being attacked by hackers, it's more important than ever to understand the benefits of a personal cloud. The magic of making this decision is that your files can be accessed over the Internet without being on the Internet. It's incredibly easy for us to subscribe to a cloud storage service today, and you will likely subscribe to one or more without realizing it.

These are just a few examples, but in practice there are many more. The benefits of such a service consist of the large-scale, easy-to-implement implementation and the flexibility offered by a significant number of applications for any platform. Any device connected to the Internet is subject to a certain vulnerability, but at least when that device is in your living room, you can slightly improve communication in a chain of weaknesses. Interest in your little cloud of holiday photos does not endlessly exist on a global level.

Manual point APN creation

This method is the most preferable, but also more difficult. Go to the device menu, item "Settings", "Connections" (Data transfer), look at the sub-item "Other networks" (in some models it is "More ..."), and then the item "Mobile network" (Mobile networks).

It's not like that at all. In practice, the latest media storage models for network deployment are becoming more and more user-friendly. Plus, they can be easily obtained remotely and are incredibly easy to update. By the way, you can do all the initial setup of your device using the mobile app.

In principle, many of the defaults that you find on the device configuration page can be left unchanged. On the same web page where you can define the above options, there is an app store that you can install. Many of them will be useless, and useful ones are already installed. If you don't know how to configure routers and extended ports, you can securely access your data from anywhere in the world using any browser and device. You can upload files from this web interface or upload new ones.

We put a tick on “Mobile data” and go to “Access points”.

We call the pop-up menu by pressing the corresponding button and select “New access point”.

The screen will display - "Change access point", here we indicate "Name" (any), from the operator - "Access point" (APN), "Username and Password".

  • Access point: internet.mts.ru
  • Name: mts
  • Password: mts
  • Access point: internet.tele2.ru
  • Name: Not entered
  • Password: Leave blank
  • Megaphone:
  • Access point: megafon
  • Name: megafon
  • Password: megafon
  • Access point: internet.beeline.ru
  • Name: beeline
  • Password: beeline

The required operator is not in the list? We turn to our own and find out this data.

If you've put in a lot of financial effort and put your hands on your personal cloud, you should do everything in your power to take advantage of all of its advanced features. As a result, it will not be difficult for you to implement new project... Optionally, you can choose to sync in one way.

After this time, you can transfer files in one direction or another. By dragging and dropping, the most important data will work most quickly using your personal cloud concept. From this screen, you can create new network locations or delete multiple folders until you get the perfect document outline that you have in mind. How do you access your personal cloud files using your smartphone or tablet? How do you share them with your friends. The speed at which you move your files remotely depends on the download speed associated with your internet service contract.

Here I will give you a hint. There are times when CHAP authorization is required for Beeline, otherwise connection problems may arise, especially if the device is from a foreign market. In this case, the Authentication Type is set to CHAP.

It should be said that, for example, for Fly, Huawei, Lenovo, the "Authentication type" field will be "Not set" by default. For the Internet to work correctly - set "No".

Basically, using this utility, you can open any documents, images, songs or movies remotely. Many of them can be played initially, and if this gesture is not possible, you can open the file at any time with another application installed on your tablet or smartphone.

Download remote torrent files and many more benefits

The standard email body can be seen in the above message. It is enough to enter the program settings page by clicking the three dots in the lower right corner and a second click on the cogwheel. You need to click, select the target directory for your photos and videos from your phone and wait. Several pictures from this program can be seen in the collage above. Alternatively, you can quickly download something from a torrent. Once you agree that the legality of this activity is questionable, you have a very effective torrent search engine.

We do not touch the rest of the settings, we leave them by default.

Now we select the created access point and use it.

There are also cases when operator codes (MNC) are not automatically registered. They can be viewed in the "Change access point" menu, just above the "Authentication type". Then you have to enter them yourself, in Android it looks like two submenus: MCC and MNC. If MCC for all operators in Russia is 250, then MNC is the last two digits of the operator code. For example, 25001 - for MTS, MCC 250 MNC 01.

The MNC code is different for different operators:

  • MTS - 01,
  • MegaFon - 02,
  • НСС - 03,
  • ETK-05,
  • SMARTS - 07,
  • Yota - 11,
  • BaikalWestCom - 12,
  • New Telephone Company - 16,
  • Utel (formerly Ermak RMS) - 17,
  • Tele2 - 20,
  • MOTIVE - 35,
  • SkyLink - 37,
  • ROSTELECOM - 39,
  • Beeline - 99.

To determine if 3g connection is enabled on the Android device, we look at the settings, everything is visible there.

Correct settings for you and smooth operation!

How to enable 3G on Android.

3G connection is the most common type of data transmission today using the Android OS. And if no one has any problems using this communication standard, then sometimes you have to tinker with the correct setting. For the most part, the necessary settings are already flashed into the phone for a specific regional operator, but there are often situations when the owner of this device is forced to enter data for each APN point independently.

In most cases, users don't need to configure anything.

What if 3G won't turn on?

The first step is to check the balance of the SIM card. Then - make sure that the "3G" service is connected and is included in the price of the tariff. If you have doubts about this, or you simply do not know how to check it, call the call center of your operator and find out if the tariff plan you are using really includes 3G Internet services.


After that, after making sure that the 3G service is connected, and there is money on the account, go to the "Settings" menu on the smartphone. Next, select the "Data transmission" section. Then we press the button "Mobile network" and turn it on, if it is turned off. On different models of smartphones with Android OS, the settings may differ slightly, but the principle is the same - and it is intuitive.


ATTENTION. Remember that 3G Internet will work only if the transmission of data from the SIM card is enabled.



Configuring Access Point (APN)

Having completed the previous three steps, we have already come close to solving the problem. Now all that remains is to configure the APN in accordance with the communication service provider and enable it. The setting is hiding somewhere in the "Data Transfer", usually hidden under the "More" or "More" buttons on Android.




Going to the menu, which is dedicated to APN, select "New access point". You will need to include data, of which we will only fill in the "Access Point (APN)", "Username" and "Password". The rest of the fields can be left blank.


  • MTS: access point - internet.mts.ru, username - mts, password - mts;

  • Megafon: access point - megafon, username - megafon, password - megafon;

  • Beeline: access point - internet.beeline.ru, username - beeline, password - beeline;

  • TELE2: access point - internet.teleru, do not enter username and password.



The smartphone is now ready to surf the web and download files. If you still did not manage to set up 3G Internet on Android, check if the SIM card is working and if it “lies” correctly in the smartphone. Accidents are not uncommon when a poorly installed SIM card turned out to be a problem with the connection to the network.


If you can't connect to the Internet on Android, try visiting your website and find answers to your questions there. Often, such sites already have a section of frequently asked questions, where you, quite possibly, will find a solution for your specific situation.

Conclusion

Remember to turn off Data Transfer when you are not using 3G. This tip is useful for all situations, unless you have unlimited 3G internet. Android with 3G connected to it loves to update installed programs and download new ones, and this invariably affects traffic. And if the traffic on the tariff has its own limit, this constant stream of updates can leave you without the Internet until the end of the day, which makes it impossible to turn on 3G when it's still noon on the street, or, even worse, slightly reduce the balance on the account.


The advent of the mobile internet has made life much easier for most people. Thanks to access to the world wide web using a smartphone, there is no longer dependence on a desktop computer and local network... At home, at work, on a trip and on a walk, you can download files, exchange data, communicate in social networks and much more.

Not so long ago, the possibilities of the mobile Internet were severely limited by low data rates. However, technologies do not stand still, and with the advent of new generation 3g access, downloading files, loading pages and pumping audio and video clips is much easier and faster. but Mobile Internet on a smartphone requires certain settings.

The mts operator offers a wide range of tariffs and options that enable subscribers to use high-speed Internet. But before you start using it, you should add the necessary parameters to your gadget. 3G technology does not require any separate settings for mts. Make sure your current location is within the coverage area high-speed internet and the phone has 3G mode turned on. The rest of the settings remain standard.

Android tablets and phones can be customized in two ways. This is the receipt of automatic parameters from the mts operator or manual configuration. The first one is the most simple and does not require the subscriber's special knowledge and skills.

It is often very difficult for a person who is not related to the field of programming and IT systems to remember and correctly enter all the parameters for accessing the network. That is why every time when changing a phone or other device, the user needs to configure 3g for mts on the android platform. The company's specialists are aware that this is not easy, therefore they have developed an automatic system for sending parameters as soon as the SIM card gets into the new device.

It happens that the system does not send a message, or the subscriber rejects them by mistake. Also, the settings can simply fly off, so you need to know how to order them again. To do this, you can use any of the available methods.

Ways of ordering settings:

  • call the autoinformer at 0890;
  • empty message to number 1234;
  • online assistant.

Each of these methods is free. After receiving the request, the system will send the necessary parameters, and all that is required from the subscriber is to save them.

Manual phone setup

Today, situations rarely occur when you need to enter the parameters into the phone yourself. Most models are compatible with automatic parameters. However, situations are different, and it is better to know in advance how to configure the Internet without automatic settings. All you need to know for this is the type of 3G network, the name of the access point (in phones it is designated as APN) and connection parameters. All this information can be obtained on the mts website or from the operator by calling technical support. The process itself does not take much time, and if everything is done correctly, the installation will be successful.

First of all, in the setup menu, you need to find the item with mobile networks, where the APN sub-item is located. Next, you need to create an APN, enter the name of the MTS Internet, internet.mts.ru is indicated in the access point, and the data transmission channel is 3g. The rest of the items can be left unchanged. The changes you have made must be saved, and the smartphone restarts for correct operation.

In the case when it is not possible to set up the Internet on your smartphone on your own, each MTS subscriber has the opportunity to ask for help from an operator who will tell you how to set up 3G, or visit a service center, where specialists will provide all the necessary assistance.

In some cases, setting up 3G and 4G connections on Android must be done manually. But first you need to figure out what are the differences between these two modes and when they can be used.

The main differences between 4G and 3G

Android users got access to 4G connection relatively recently - several years ago, in contrast to 3G, which can be used for more than 10 years. The main advantage of 4G and the reason to switch to it is the speed, which is much higher than what 3G can provide even with an ideal signal. The minimum speed for 4G is 100 MB / s, and 3G is 384 Kbps. Of course, under certain conditions, the speed may be lower, but the approximate ratio will remain.

The only downside to 4G is the smaller coverage area than 3G. Because of this, the likelihood of a 4G signal being as good as 3G in your area is not very high. But this can be checked in advance, even before switching to 4G, using maps with coverage areas, which are usually located on the websites of companies that provide you with the Internet. In large central cities, there are often no problems with 4G in terms of signal strength.

This is what the network coverage map looks like.

Another condition that, if not met, will not work with 4G, is the presence of a device and a SIM card that supports this method connections. Today, almost all devices and SIM cards support 3G, but about 4G you need to clarify in advance. AND Please note that higher connection rates will certainly be more expensive.

Setting up and choosing a connection method

So, if you made sure that you have a device and a SIM card with 3G or 4G support, and the required tariff is connected, then to access the Internet you will need to follow these steps:

  1. To start using the default network, just expand the Quick Access Toolbar and activate the icon with two arrows pointing in different directions. Internet connection can take up to two minutes, depending on the signal quality, please wait.

    Click on the icon to connect to the Internet

  2. If the device connects to the wrong mode, for example, to 3G instead of 4G, then you must select the main connection yourself. To do this, open the device settings.

    Open the "Settings" application

  3. Go to the SIM card settings. The name of this item in the settings of different versions and models of Android may differ, so look for something similar to it.

    Go to the SIM card settings

  4. Expand the Network Mode menu.

    Click on the "Network Mode" button

  5. Select the type of connection to which the device will connect by default. If you select the item with the "Priority" prefix, then the device will try to connect to the selected network for a while, but if this fails, then it will start connecting to a network of lower rank.

    Choosing a priority network

Usually, a SIM card connected to a phone or tablet automatically sets all network settings, but if they fail, you can restore them manually:

Table: operator parameters

Video: setting up Internet on Android

Network connectivity problems

When connecting to 3G and 4G, you may experience the following problems:

  • connection lasts longer than two minutes;
  • connection is not made or hangs at one of the stages;
  • data transmission is not included;
  • the signal jumps from 4G to 3G, E, H, G;
  • the signal is unstable.

Reasons and solutions for similar problems:

  1. First of all, reconnect to the Internet several times, if this does not help, then restart the device itself and try to do it again.
  2. Wait some time, perhaps the operator's servers have fallen or are undergoing technical breakdowns. You need to wait no longer than a day, because if nothing has changed after this time, then you need to solve the problem yourself.
  3. If this is your first time connecting from a phone or tablet, make sure you are within range.
  4. Check if your SIM card is blocked due to zero or negative balance.
  5. Execute manual setting network, how to do this is described above in the paragraph "Configuring and choosing a connection method".
  6. If such problems have not arisen before, then feel free to contact technical support operator, whose contacts should be indicated on its official website. Explain your problem to them, clarify that reconnecting to the network, restarting the device and waiting did not help. Most likely, the problem is on their side, but they need to be informed about it, otherwise they will not be noticed. If after reporting the problem more than a day has passed, and the problem has not been resolved, do not hesitate to contact support again and remind you of your case.

Reset device

If the connection stopped working after changing any device settings or installing third-party software on it, then manually roll back all the changes until everything worked fine. It is possible that by your actions you have caused conflicts within the system that block access to the connection. If this does not help, then you need to perform a collection of settings, which will return your device to its original state. But keep in mind that when resetting, all data and third-party programs will be lost forever, so save all important information to another medium in advance.

If you choose between 3G and 4G, then focus on finding you in the coverage area of ​​one of the networks, as well as on the price of a SIM card, device and tariff with support for the type of connection you have chosen. If you have any problems with the connection, then contact the technical support of the operator that provides you with the Internet, but before that, do not forget to try the above methods to manually troubleshoot connection problems.

If Android does not connect to the Internet via a mobile network, then the cause of the problem should be looked for in the system settings. In rare cases, the mobile Internet does not work due to failures on the side of the telecom operator, but usually the user can fix the error on his own.

This article is suitable for all brands that produce phones on Android 9/8/7/6: Samsung, HTC, Lenovo, LG, Sony, ZTE, Huawei, Meizu, Fly, Alcatel, Xiaomi, Nokia and others. We are not responsible for your actions.

Why is the mobile Internet not working on Android?

The first thing to do if the mobile Internet does not turn on on Android is to make sure that data transfer is enabled in the settings.

  1. Open the settings, go to the "Connections" or "Network Connections" section.
  2. Go to the "Data Usage" menu.
  3. Turn on mobile traffic.
Increase

You can also turn on the mobile Internet on Android using the quick menu. Swipe down with two fingers from the top of the screen and a full menu will open with buttons for quickly activating smartphone functions.

Increase

The next step is to check the balance of the personal account. If your phone has two SIM cards, you need to see in the settings which one is used to connect to the mobile Internet, and make sure that the appropriate service package is connected to it.

Another reason that the mobile Internet does not work may be the incorrect registration of the phone on the network. To fix the failure, just restart the device. If this does not help, then check the APN point data by comparing them with the information from the operator's official website. Usually, APN data comes in a configuration message when the SIM card is first installed, but it happens that the user does not save them, or they get lost during the use of the system.

  1. Go to the operator's website - MTS, Tele2, Beeline, Megafon or your regional network.
  2. Find Internet settings for Android in the help section.
  3. Open your phone settings. You need the "Mobile networks" section.
  4. Go to the subsection "Access points".
  5. Change the current point or create a new one using data from the operator's website.
  6. Reboot your device.

Manual APN configuration also helps in the case when the Internet does not work in some applications. If this does not help, you can advise to reset the network settings - in the latest versions of Android there is such a function.


Increase

Another possible reason complete absence mobile internet - lack of network coverage. If the "LTE / 4G" mode is selected in the Android settings, and the device is only in the coverage area of ​​the 3G network, then you will not be able to access the Internet. What to do in such a situation:

  1. Open the settings, go to the "Connections" section.
  2. Go to the mobile network settings.
  3. Open "Network Mode" and set automatic switching between LTE, 3G and 2G.
Increase

If the Internet still does not work in this mode, select a specific value - 3G or 2G. If you are in an area where the operator has no coverage at all, then no mode change will help. This often happens on the road between cities - not only the Internet stops working, but also calls with SMS.

There is a small chance that Internet problems are related to preventive work or a failure on the operator's side. To exclude this possibility, call your provider and clarify why your mobile Internet does not work.

Automatic activation of mobile Internet

Another problem with the mobile Internet is the automatic connection and debiting of money or traffic, depending on the tariff. This happens usually due to the fact that some application requires and uses it without your knowledge. It is very easy to calculate it:

  1. Open the "Connections" section in the settings.
  2. Go to the Data Usage menu.
  3. See which app has spent the most traffic.

To avoid wasting traffic without your knowledge, turn off your mobile Internet. You can do this in the same section "Data usage" or in the Android quick settings curtain.


Increase

You should also check the Play Market settings. If they include automatic updating of applications with any connection, then the phone will waste mobile traffic without asking permission.

 

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