The situation when a crossed out SIM card icon or the words “No network” suddenly appears on the smartphone screen can unsettle any user. This problem is especially acute if you use the services of one of the largest operators, such as MTS, and are in an area where coverage must be stable. The lack of communication blocks not only calls, but also access to banking applications, instant messengers and navigation, turning a modern gadget into a useless piece of plastic.
The reasons for the disappearance of the signal can vary from a simple software failure to physical damage to the antenna module or problems on the part of the telecom operator. Often users panic and immediately take the device to a service center, although in 80% of cases the situation can be corrected independently by rechecking the settings or performing a few simple manipulations with the SIM card. In this article, we will analyze in detail the algorithm of actions for restoring communication on devices running Android.
Before moving on to complex settings, it is necessary to exclude the most obvious factors. Sometimes the problem lies not in the phone, but in environmental conditions or the condition of the network access card itself. Let's go through the diagnostic steps step by step to return your smartphone to working condition.
Primary diagnostics and hardware check
First of all, you should make sure that the problem is really localized in your device, and is not a consequence of massive failures on cell towers. Try calling friends or neighbors who also use the services MTS and are located near you. If they have a connection, but you don’t, then the problem is with your phone or SIM card.
The simplest and most effective method of initial diagnosis is to reboot the device. Many users ignore this step, considering it too primitive, but restarting the system allows you to reset temporary errors in the operation of the radio module and re-register in the operator’s network. Turn off your smartphone, wait 10-15 seconds and turn it on again.
⚠️ Attention: If after a reboot the network icon does not appear and the SIM card indicator shows an error, do not under any circumstances try to disassemble the phone case yourself if the device is under warranty. This will result in loss of warranty service.
The next critical step is to physically check the SIM card. Over time, the contacts on the card can oxidize, become dirty, or simply become misaligned in the slot. Carefully remove the SIM card tray using a special paper clip. Inspect the chip: there should be no visible scratches, cracks or signs of corrosion.
Take a soft, dry cloth or eraser and gently wipe the gold contacts on the SIM card. Do not use water or alcohol, as moisture may get inside the chip and permanently damage it. After cleaning, insert the card back into the tray, making sure that it fits tightly and the cut corner matches the shape of the tray.
If you have the opportunity, try inserting your SIM card MTS to another phone. If the network appears immediately in another device, it means that the problem lies in the settings or hardware of your main smartphone. If there is no card in the other phone, the SIM card itself is probably faulty and needs to be replaced at the communication store.
Configuring network parameters and selecting an operator
It often happens that the phone automatically selects the wrong operator or tries to connect to a communication standard that is poorly supported in a given area. In Android settings, you can force network search parameters. To do this, go to menu Settings, then select section Connections or Network and Internet.
Find item Mobile network and open the subsection Telecom operators. By default, the mode is “Select automatically”. Disable this switch and wait for the smartphone to scan the airwaves. In the list that appears, select MTS RUS or MTS. This action will force the phone to ignore other available networks and try to register exclusively with your operator's towers.
Another important parameter that affects communication stability is the preferred network type. In the same menu Mobile network find the item Network mode. If you set the setting to “5G Only” or “4G Only”, and these standards are unstable in your coverage area, the phone will lose signal. It is recommended to switch the mode to 2G/3G/4G (auto) or 3G/2G (auto) for testing.
In areas of poor reception (basements, old buildings), forced switching to the “3G Only” mode often gives a more stable signal for calls than automatically searching for 4G.
After changing the network mode, the phone may lose connection for a few seconds. This is fine. Give the device a minute to re-register with the network. If the icon 4G or H+ appears, try making a test call.
Checking and setting up APN access points
Even if the network icon is displayed correctly, the lack of Internet or the inability to send MMS often indicates incorrect settings of the access points. APN (Access Point Name). These parameters tell the phone through which gateway to access the global network. For the operator MTS there are strictly defined values that must be specified in the system.
To check these settings, follow the path Settings → Connections → Mobile network → Access points (APN). If the list is empty or the parameters differ from the standard ones, you must create a new access point manually. Click on the “plus” or “add” icon in the upper corner of the screen.
Fill in the fields with the following data, which is relevant for most regions of Russia:
- 📡 Name: MTS Internet
- 🌐 Access point (APN): internet.mts.ru
- 👤 Username: mts
- 🔑 Password: mts
- 🔒 Type authentication: PAP or CHAP
- ⚙️ APN type: default,supl
The remaining fields, such as “Proxy”, “Port” or “MMSC”, can be left blank unless otherwise instructed by the operator. After entering the data, be sure to save the new access point by clicking on the three dots in the menu and selecting “Save”, and then activate it by checking the box or switch next to the name MTS Internet.
⚠️ Attention: Network parameters and tariff conditions may be changed by the operator. Before manually setting up APN, it is recommended to check the current data in the subscriber’s personal account or on the operator’s official website to avoid connection errors.
If the Internet does not work after saving the settings, try turning Airplane Mode on and off. This will restart the radio with new parameters. In some cases, a complete reboot of the smartphone is required to apply changes in the network configuration.
☑️ Diagnosing a connection problem
Reset network settings to factory values
If manual configuration of parameters did not bring results, the system may have accumulated software errors or configuration conflicts files. In such cases, the most effective solution is to reset your network settings. This procedure will return all Wi-Fi, Bluetooth, and cellular settings to their out-of-the-box state, but will not delete your personal files, photos, or apps. To perform a reset, go to
To perform a reset, go to Settings your device. In the settings search (usually the magnifying glass icon at the top), enter the phrase "Reset" or "Reset settings." Select item Reset Wi-Fi, mobile network and Bluetooth settings. On different smartphone models (Samsung, Xiaomi, Huawei), the name may differ slightly, but the essence remains the same.
The system will ask you to confirm the action and may require you to enter the screen unlock PIN code. Confirm the operation. After this, the phone will automatically reboot. Once the download is complete, you will have to re-enter passwords for known Wi-Fi networks and re-pair Bluetooth headsets, but the cellular settings will be cleared of errors.
| Action | What is saved | What is deleted | Execution time |
|---|---|---|---|
| Reset network settings | Photos, contacts, applications | Wi-Fi passwords, APN settings, BT pairings | 1-2 minutes |
| Reset to factory settings | Nothing (complete clearing) | All data, accounts, applications | 10-20 minutes |
| Reboot | All data and settings | Temporary RAM files | 30-60 seconds |
This method often helps in situations where the phone “sees” the network, but cannot register with it due to desynchronization protocols. After the reset, the phone will start searching for the network again, as if it had just been bought in a store.
Risks when resetting the settings
The only risk is the need to re-enter passwords for Wi-Fi networks. If you do not remember the password for your home network, make sure that it is written down on the router before resetting.
Updating software and firmware
Smartphone manufacturers regularly release Android system updates that contain not only new functions, but also bug fixes for the radio module. An outdated version of the firmware may not work correctly with new communication standards or frequencies used by the operator MTS in your region.
You can check for updates in the Settings → System → System updatesection. If new software is available, download and install it after connecting to a stable Wi-Fi network and charging the battery to at least 50%. The update process may take from 10 to 30 minutes, during which the phone will be unavailable.
In rare cases, the problem may be related to a specific firmware version that contains a bug. If the problem appeared immediately after the update, it makes sense to contact the service center to roll back the version or reflash the device. However, for most users, the standard update through the settings menu is a safe and recommended step.
Regular software updates eliminate software conflicts of communication drivers, which are often the cause of sudden loss of network on working equipment.
When a SIM card replacement or a service visit is required
If all of the above methods did not help, and the phone still says “No network”, most likely the problem is hardware related character. This could be a failure of the SIM card itself, damage to the slot in the phone, or a malfunction of the antenna module. SIM cards have a limited lifespan and can degrade over time, especially if they are used for more than 5-7 years.
To replace the SIM card, you will need to visit the nearest communication store MTS with your passport. The replacement procedure is usually free or costs a symbolic amount, and the phone number and tariff are retained. The new card will have improved contacts and support for modern encryption standards.
If replacing the SIM card did not produce results, and your card works properly in another phone, then the diagnosis is obvious: the smartphone itself is faulty. This could be the antenna cable coming off after a fall, oxidation of the contacts on the motherboard, or failure of the radio part. In this case, you cannot do without qualified repairs at a service center.
⚠️ Attention: If the phone was dropped or fell into water before losing the network, the probability of a hardware failure is more than 90%. Do not try to dry it with a hairdryer or place it on the battery - this may aggravate damage to the internals.
Sometimes the problem lies in the smartphone being blocked by IMEI. If the device was purchased secondhand and was previously reported stolen or lost by the previous owner, the telecom operator has the right to block access to the network. You can check the IMEI status on specialized resources or by contacting operator support.
Frequently asked questions (FAQ)
Why does it say “No network”, but the Internet via Wi-Fi works?
This means that the Wi-Fi module is working, but the cellular module cannot register on the network operator. The problem may be with the SIM card, APN settings, lack of coverage in the area, or hardware failure of the phone's antenna.
Can the account balance affect the presence of the network icon?
Usually, if the balance is zero or negative, the network icon remains, but calls and the Internet are blocked. However, in some cases, if the number is inactive for a long time or the operator blocks it, the phone may display a lack of registration in the network. Check your balance via USSD command or application.
What to do if the phone sees the MTS network, but does not call?
Check whether call forwarding or number blocking is enabled. Also make sure that voice calls are allowed in your settings. Try manually selecting the network instead of automatic mode. If it doesn’t help, reset the network settings. Mobile network Voice calls are allowed. Try manually selecting the network instead of automatic mode. If that doesn't help, reset your network settings.
Does a smartphone case affect the signal level?
Yes, some cases with metal inserts or magnetic fasteners can shield the antenna signal, especially in areas of poor reception. Try to remove the case and check if the signal level changes.
How to check if the phone is locked by IMEI?
Dial the command *#06# to view the IMEI, then use online services for checking the device status or contact the operator's communication center. If the phone is on the blacklist, it will be extremely difficult to unlock it legally.