Modem megaphone 4g does not see the SIM card, the Internet does not work

The situation when the Yota 4g lte modem constantly turns off, unfortunately, is not uncommon. The reasons can be very different, but their consequence is always discomfort: the inability to work normally, watch movies, download music, communicate online, etc. And in general, in the 21st century, problems with the Internet falling off should not exist a priori. Agree, the wireless signal has long become “second air” for us, and when it is missing, we don’t like it.

But do not rush to throw the device in the trash and hastily look for another provider; the problem is not always hidden in a faulty flash drive or signal instability. Let's find out why the Iota modem constantly turns off, let's look at all the possible reasons. And, of course, we will provide action algorithms for eliminating each of them. And let the Internet in your home work constantly and never turn off!

How to configure an adsl modem in router mode (router mode)

Many users have ADSL modems or optical modems (ONT terminals) configured in transparent bridge mode. That is, the modem acts as a transmission link, and the computer connects to the provider’s network as if directly, logically bypassing the modem or terminal. Is it good or bad? Bridge mode limits the ability of additional devices to connect to the Internet. If you have a second computer or laptop at home, then the transparent bridge mode will no longer suit you and you will have to dance with a tambourine to connect another tablet or smartphone. In this case, it would be best for you to reconfigure the modem into router mode.

PC setup

To set up your computer you need:

go to “Start”;
select “Control Panel”;
open “Network connections”;
right-click on the local network connection;
select “Properties”;
In the “General” tab, select “Internet Protocol” and click properties;
In order for the router to be able to provide a specified or dynamic IP from the provider, you must select “Obtain an IP address automatically.”

Manufacturing scheme

What are the differences between 3G and 4G networks: features, advantages and disadvantages

How to make a WiFi adapter from a working module from a non-working tablet was described above. It should be noted here that for a personal computer, a WiFi module can be made with your own hands from a similar device from a laptop. For this you will need:

open the laptop lid, unscrew the module mount, disconnect the antennas and remove it;
Install the removed board into a pre-purchased or self-made miniPCIe-PCIe adapter and secure it with fasteners;
install the adapter into the PCIe connector, having previously connected the antennas using the appropriate cable and connectors (if there is no cable, you can take it from the old laptop from which the module was removed and solder it to the pin antennas);
turn on the PC and configure the hardware by installing the necessary software.

Note! Often, the chip that powers the WiFi module is of unknown origin, and finding drivers for it seems like a very problematic task. In no case should you use ready-made driver package solutions, because they can secretly install additional software that pollutes the system and takes away its resources. You can deal with the problem using standard system methods; in Windows, to do this, in the “Control Panel” - “Device Manager” section, you need to find the required wireless device, call up its properties and on the “Details” tab, click on the drop-down menu. The “Device ID” section will display the device identification number; you need to copy and paste it into the search engine. In response, answers to queries will be displayed in which you can find the device model, after which you need to go to the manufacturer’s official website and download drivers from there. In Linux, the operation of identifying equipment on the PCI bus is performed using the lspci utility; if you search for a wireless device, you need to enter the command “sudo lspci | grep wireless" and press "Enter", the response will contain all the detailed information.

To make your own adapter, you will need a certain set of tools and materials, and the step-by-step instructions will look like this:

materials - textolite, metallized on one side, glossy paper (advertising brochure in A4 format from any company), a set of radio components, as well as tin, soldering acid and rosin, acetone, a rag, ferric chloride;
tools - soldering iron, mini-drill, drills from 0.7 to 1 mm, flat needle file, sandpaper with an abrasive number less than 800, iron;
from software and peripherals - Sprinter Layout and laser printer;
archive, which contains a circuit with a printed circuit board, and use a laser printer to transfer the drawing onto glossy paper;
cut the textolite to size, file the edges, clean the copper surface from oxide with sandpaper, degrease with a cloth moistened with acetone;
place the paper with the printout with the pattern down on the board installed on a non-flammable, flat surface, and warm it well with an iron (the essence of the process is that at temperature the toner melts and sticks to the metal surface, after cooling it hardens again - a primitive mask is obtained);
Allow the resulting workpiece to cool well and place it in a container with cold water; after half an hour, the paper should come off easily, and the pattern applied with toner should remain on the board;
using ferric chloride, etch the board, while following the instructions included with the preparation (the quality of iron and its dosage greatly depend on class=”aligncenter” width=”1200″ height=”676″[/img]
drill pads (holes for installing radio components) at the designated points;
Tin the legs of the elements, install them in their seats and solder them.

Note! When performing any electrical work, use a multimeter to look for short circuits and check the ratings of electronic components!

List of possible reasons

Let's list the situations due to which your Yota 4g lte modem periodically turns off:

If the provider is carrying out technical work or testing network equipment, the Yota 4g lte device may be temporarily disabled. By the way, such work on the line occurs infrequently, and if your device turns off constantly, most likely the problem is something else.
Often the answer to the question “why does the Eta modem turn off by itself” lies in its location - in an area with poor reception.
You may also have problems with the equipment - with the USB cord or USB port. If they are faulty or work at half capacity, it is not surprising that your Iota 4g lte modem constantly turns off.
Your own computer can put a spoke in the wheels - viruses, energy saving settings (reducing the amount of power) or software that conflicts with the Yota 4g lte device. Heat in the room can also cause the receiver to malfunction.
Let’s not rule out a situation where the Yota modem overheats and turns off due to its own malfunction.

So, we found out why the device may constantly turn off. Before running to the service, let's rule out each of the above problems one by one.

Megafon modem does not work on laptop

The provider's official Internet resource describes common errors that a subscriber may encounter and ways to solve them.

Lost network connection

This system alert pops up when an attempt to connect to the global network fails.

Possible reasons may be:

Zero personal account balance. Lack of funds blocks access to the network. The user needs to top up his balance to use the company's services.
Connecting a 4G router to the system. The system may not always detect the device correctly. The user needs to go to the device management program, open the tools section, and go to settings. Change the checkbox on the NDIS and RAS values. Be sure to save the new settings by clicking the corresponding button.
Signal. The user needs to make sure that the Internet signal is stable. When modem is at altitude, the signal is received better. This simple trick will help when the network signal weakens.
Settings. Creating a new profile will help you correctly detect your PC or laptop device. Perform similar actions in the device settings, which are located in the Tools section.

If, when using a 4G modem from Megafon, the Internet does not work or often freezes, the user needs to pay special attention to whether the router is correctly detected by the system.

The program does not see the USB modem

The absence of software or the necessary drivers on the PC will cause a message to appear stating that the 4G device was not detected.

The user needs to perform the following operations:

reboot the PC;
reconnect the device;
wait for the installation of software and drivers to complete.

If there is no automatic installation, the user should open the system drive C, go to the folder with the Megafon program, and force the installation process to start using the driversetup.exe file.

registration error

Users may encounter a problem when the Internet does not work when using a Megafon 3g modem. In this situation, you need to check your registration in the operator’s network.

If this item is missing, the user needs to perform the following actions:

Go to the Network section.
Open the item with registration mode.
Specify the required operator.

If there is no positive result, restarting the PC and improving signal reception by moving the modem to a higher place may help. After completing these steps, go back to the Network section, go to settings, and select WCDMA Priority. Be sure to save changes using the button.

If the modem does not register on the network after completing all the steps, the user must contact the provider’s office to replace the 4G device.
June 17, 2021

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The router does not see the Tele2 SIM card

The specific inserted SIM card is not detected.
One card does not work, but with the other, from the same operator, everything is fine.
In general, no SIM card works; a message appears about its absence.

Possible reasons why the modem does not see the SIM card

The router does not see the Tele2 SIM card

It is not connected or not fully connected.
Drivers do not work correctly or are not installed at all.
The USB connector does not work.
No network connection.
It's faulty.

When the TELE2 SIM card does not work, the gadget stops detecting it, so there is no connection. In this case, you must do the following:

What other advantages does router mode (router mode) have?!

In addition to the ability to connect more than 1 device to the Internet, the router mode also has such advantages as: - built-in firewall - additional protection of devices from hacking attempts from outside; — the ability to organize a full-fledged home network; - connecting various network peripherals - TVs, media servers, printers, storage devices, etc.; In addition, if the modem has a WiFi module, it will now be possible to connect various mobile devices - tablets, smartphones, etc.