The situation when a smartphone endlessly tries to register on the network is one of the most annoying for MTS users. The device screen may be constantly lit, the battery is rapidly discharged, and in the status bar, instead of the usual signal “sticks,” an icon with an exclamation mark or the inscription “Emergency calls only” appears. This problem often occurs after a firmware update, a region change, or when the SIM card profile is damaged.
Users often confuse normal signal loss with a cyclical registration process when the phone tries to connect to the base station, is rejected and starts the procedure again. In the case of the operator, this may be due to outdated settings of the access point or a conflict of network protocols. Understanding the nature of the failure is the first step to eliminating it. MTS this may be due to outdated access point settings or a network protocol conflict GSM And LTE. Understanding the nature of the failure is the first step to eliminating it.
In this guide we will examine not only standard reboot methods, but also deep configuration of system parameters through the engineering menu and manual registration. You do not need to be an expert in mobile networks to perform these steps, but care is required when entering codes and changing settings.
Primary diagnosis and quick solutions
Before proceeding with complex manipulations, it is necessary to exclude trivial physical causes of the failure. Often the problem does not lie in the software Android, but in the contact between the SIM card and the phone reader. Oxidation of contacts or microcracks on the chip can cause constant disconnections, which the system interprets as the need for a new registration.
Remove the SIM card tray and carefully inspect the chip. If dirt appears on it, gently wipe it with a soft cloth moistened with alcohol. Make sure the card is not damaged and is firmly seated in the tray. After installing it back, give the phone a minute to initialize. If the status has not changed, proceed to the software methods.
⚠️ Attention: If your MTS SIM card has been used for more than 5-7 years, it may be physically worn out or use an outdated voltage standard. In this case, replacing the card in the operator's cabin will solve the problem more reliably than any settings.
The next step will be a forced reset of the network stack through airplane mode. This action closes all active connections and forces the modem to reboot regardless of the main system operation. Turn on airplane mode in the notification shade, wait 15-20 seconds and turn it off. This simple trick helps in 30% of cases of temporary registration failures.
If, after turning on airplane mode, the phone immediately starts searching for a network, but does not find it within 2 minutes, the problem is most likely in the IMEI coverage or blocking, and not in the Android settings.
Manual operator selection and network modes
Automatic network selection sometimes leads to the fact that the phone tries to register in roaming or on frequencies that are poorly covered by MTS towers in your region. Switching to manual mode allows you to forcefully select the desired operator and fix the connection. To do this, go to Settings → Connections → Mobile networks → Telecom operators.
Disable the “Select automatically” toggle switch and wait until the search for available networks is complete. In the list that appears, select MTS RUS or MTS. If the system gives a registration error, try selecting another operator from the list (for example, Megafon or Beeline), and then return back to MTS. This method often resets a frozen authentication process.
It is also critical to check your preferred network type. Modern smartphones by default tend to 5G or LTE, but in areas of poor reception it works more stably 3G or even 2G. Go to Settings → Mobile networks → Network mode and select the option “3G only” or “2G/3G (auto)”. This will eliminate the phone's constant attempts to find a high-speed tower that is not nearby.
- 📡 Select “2G only” to check: if registration is successful, then there is a problem with 4G/LTE coverage in your area.
- 🔄 Try registering with a neighboring operator to check the health of the phone's radio module.
- ⚙️ Reset the APN access point settings to factory settings in the mobile networks menu.
Setting up APN access points for MTS
Incorrect access point parameters APN (Access Point Name) are a common cause of problems with data transmission and indirectly affect the stability of registration in the packet network. If the phone cannot correctly establish a data session, it may periodically reset the registration. Checking these settings is required.
Go to section Settings → Connections → Mobile networks → Access points (APN). Click on the menu (three dots) and select Reset Settings or Reset to Default. If this does not help, create a new access point manually. Enter your name mts and also specify mtsin the APN field. Leave the remaining fields empty or at default.
Pay attention to the “Authentication Type” and “APN Type” fields. For MTS, the authentication type should usually be set to PAP or CHAP, and the APN type - default,supl. An incorrect value in the field MCC (country code) or MNC (operator code) may cause the phone to consider the SIM card invalid for the current network.
| Parameter | Value for MTS | Note |
|---|---|---|
| Name | MTS | Custom name |
| APN | mts | Required in small letters |
| User name | mts | Case is important |
| Password | mts | Case is important |
| Authentication type | PAP or CHAP | Depends on the region |
After saving the new access point, be sure to restart the device. Activate the created point by clicking on the circle next to it. If the Internet appeared and the problem with registration disappeared, then the failure was caused by a damaged access profile.
☑️ Checking APN settings
Using the Android engineering menu
For deeper diagnostics and control of the radio module, you can use engineering menu. This is a hidden interface designed for developers and service engineers that allows low-level control of communication parameters. It is accessed through a special code in the “Phone” application.
Enter the code ##4636## in dialing. If the menu opens, select “Phone Information”. Here you will see a switch “Enable radio module” (or “Set preferred network type”). Try turning off the radio module, wait 10 seconds and turn it on again. This is a harder reset than airplane mode.
In the same menu you can force change the network type. Find the “Set your preferred network type” drop-down list. Select option LTE Only (LTE only). If the phone registers on the network, then the problem was switching between standards. However, remember that in LTE Only mode, normal voice calls may not work unless VoLTE technology is enabled.
⚠️ Attention: Do not change the values in the engineering menu if you do not understand their purpose. Incorrect setting of frequency ranges (Band) can lead to a complete loss of communication, which can only be corrected by resetting to factory settings.
If the code ##4636## does not work on your device (often happens on smartphones Xiaomi, Samsung or Huawei with new versions of Android), you can try alternative manufacturer specific codes. For example, for some Samsung models, the code *#0011#is suitable, which opens the service status menu, where you can also see registration details.
Alternative codes for different brands
For Xiaomi, try the code ##6484## (CIT engineering menu). For Huawei and Honor it often works ##2846579##. For MediaTek processors, the universal code is #15963# or #3646633#.
Resetting network settings and factory reset
If the software settings have gone so wrong that manual correction does not help, it is advisable to reset the network settings. This operation will erase all saved Wi-Fi passwords, Bluetooth settings, and mobile network settings, returning them to factory settings. In this case, your personal data (photos, contacts) will remain intact.
Reset via path Settings → System → Reset settings → Reset Wi-Fi, mobile data and Bluetooth settings. Confirm the action and wait for the reboot. After turning on, the phone will begin a clean registration in the MTS network, downloading the current operator settings automatically.
As a last resort, when nothing helps, a full reset to factory settings remains (Hard Reset). This will erase all data from the device, so be sure to back it up. Go to Settings → System → Reset settings → Delete all data (factory reset). This often solves problems caused by conflicts after an unsuccessful system update.
- 🗑️ Resetting the network does not delete applications and media files, only the connection configuration.
- 💾 Before performing a full reset, be sure to save important data to the cloud or to your computer.
- 🔋 Make sure the battery charge is above 50% before starting the reset procedure.
Resetting network settings is the “golden mean” between a simple reboot and completely deleting data. In 80% of cases, it solves problems with cyclic registration without losing personal information.
Problems with IMEI and device blocking
One of the most serious reasons for the inability to register in the MTS network is the loss or incorrect operation of IMEI (International Mobile Equipment Identity). If in the phone settings in the “About phone” section, instead of a 15-digit number, Null, 000000000000000 or dashes are displayed, then the firmware of the radio module is damaged.
This often happens after unsuccessful attempts to obtain root access, flash the device, or install custom recovery. In this case, the phone cannot identify itself in the operator's network, and registration requests are rejected by the base station. This cannot be corrected using Android software settings.
To restore IMEI, you need to flash the partition EFS or Persist (depending on the processor) using a computer and special software (for example, QPST for Qualcomm or SP Flash Tool for MediaTek). It is better to entrust this procedure to the service center specialists, since the risk of turning the phone into a “brick” is very high.
⚠️ Attention: The MTS operator and other telecom operators can block devices with “gray” IMEI or those listed in the database of lost/stolen phones. You can check the status of your device on the official IMEI checking portal.
It is also worth considering that the internal rules and technical regulations of telecom operators may change. What worked yesterday may require different settings today. If you are sure that the equipment is in good working order, but registration does not work, check the current requirements for settings in your MTS personal account or contact technical support.
Find out your IMEI by dialing the code *#06#. Write it down on a piece of paper and store it separately from the phone - this will help when contacting service or the police in case of theft.
Frequently asked questions (FAQ)
Why does the phone write “Emergency calls only”, although other operators are working?
This indicates that your phone cannot authenticate exactly in the MTS network. Possible reasons: a blocked SIM card due to debt, incompatibility of the phone's frequency ranges with MTS towers in your area, or a damaged operator profile on the SIM card itself. Try inserting an MTS SIM card into another phone to check.
Can an Android update cause a registration problem?
Yes, after a major system update (for example, from Android 12 to 13), the modem configuration files may get lost or the APN settings may change. In such cases, resetting the network settings or manually re-configuring the access point helps.
What to do if only the “2G Only” mode helps?
This is a sure sign that there is no stable 3G or 4G coverage in your location, or the phone’s antenna is damaged and cannot pick up high frequencies. Leave the 2G mode for calls, but keep in mind that the Internet will be very slow.
Does the case affect registration on the network?
Yes, some metal or thick rubberized cases with magnetic fasteners can shield the antenna signal. Try removing the case and checking if the message about searching for a network disappears.
How do I know if my phone is locked by the operator?
If the phone was purchased in installments from MTS and no payments were made, the operator can block the device by IMEI on its network. Insert a SIM card from another operator: if the phone works with a different SIM card, it means the blocking is point-based (MTS only). If not a single SIM card works, the problem is in the hardware or global blocking.