Mobile data does not work on Android - what to do in 2026?

Have you turned on mobile data, but there is still no Internet? The 4G/5G symbol on the notification panel is gray, and the pages do not load even after a reboot? The problem with connecting to the mobile network is one of the most common on Androiddevices, and the reasons may lie both in the smartphone settings and on the operator’s side. In this article we will look all possible solutionsfrom basic to advanced, which will help you regain access to the network without contacting a service center.

Failures with the mobile data often occur after updating the firmware, changing the SIM card, or even a banal trip to another region. Sometimes the operator himself is to blame (for example, technical work or blocking for debts), but in 80% of cases the problem is solved independently in 5–10 minutes. We have collected current methods for Android 10–14including features of working with dual-SIM phones and devices from Samsung, Xiaomi, Realme and other brands.

Before you start setting up, check the obvious: are there enough funds in your account (especially if you use prepaid plan), whether Airplane mode is activated, and whether Energy saving modeis enabled, which may limit background data transfer. If everything is in order, we move on.

1. Rebooting the smartphone and checking the SIM card

It sounds trivial, but 30% of problems with mobile data they are solved with a simple reboot. During prolonged operation of the device, software glitches may occur in the communication module, which interfere with the correct operation of the network. Turn off the phone for 30 seconds, then turn it on and check the connection.

If rebooting does not help, remove the SIM card and inspect it for damage:

• 🔍 Check if the contacts (golden stripes) on the card are bent.
• 📱 Make sure that the SIM is correctly inserted into the tray (chip down, the beveled corner matches the mark on the phone).
• 🔄 Try inserting the SIM into another smartphone - if the Internet works, the problem is in your device.

On dual-SIM phones (Redmi Note 12, Samsung Galaxy A54 etc.) Make sure mobile data is enabled for the correct SIM card. Go to Settings → SIM cards and mobile networks → Mobile data and select the desired slot.

⚠️ Attention: If the SIM card is damaged or is not recognized at all, contact your operator for a replacement. Modern nano-SIM are sensitive to static electricity - do not touch the contacts with your fingers.

2. Checking the network mode and operator selection

Sometimes the smartphone cannot automatically connect to the network due to incorrect communication mode settings. For example, if you manually select 3G only, and the operator has disabled support for this standard in your region. To fix this:

1. Go to Settings → SIM cards and mobile networks → Preferred network type.
2. Select 4G/5G (recommended) or Auto (item name may vary depending on the firmware).
3. If the option 5G is not available, update the firmware - some budget models (Poco M5, Nokia G42) require a special update to support new standards.

Also check if manual network selection is enabled. To do this:

• Go to Settings → Mobile network → Network operators.
• Click Search for networks and wait for the scan to complete.
• Select your operator manually (if automatic connection failed).

3. Setting up APN access points

Incorrect parameters APN (Access Point Name) is one of the main reasons for the lack of mobile data. These settings are responsible for connecting to the operator’s network, and sometimes they get lost after updating the system or changing the SIM card. To check them:

1. Open Settings → SIM cards and mobile networks → Access points (APN).
2. If there are several profiles, select the one that matches your operator (for example, internet.mts.ru for MTS).
3. Click on the profile and check the settings. They must match the official data of the operator (see table below).

If the profile is missing or the parameters are incorrect, create a new one:

• Click Add access point.
• Enter the data according to the operator's instructions (usually it is enough to specify Name, APN i Authentication type).
• Save and select a new profile.

⚠️ Attention: Settings APN may differ depending on the region or tariff (for example, for corporate clients). Check the current parameters on the operator’s website or through support.

The profile name matches the operator|

APN was entered without errors|

Type authentication: PAP or CHAP|

Protocol: IPv4/IPv6 (or IPv4)

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4. Reset network settings

If the mobile data still does not work, the next step is resetting network settingsThis will return all connections to factory settings, including. Wi-Fi, Bluetooth and mobile network. Data on the phone will not be deleted, but you will have to re-enter Wi-Fi passwords.

Instructions for most smartphones:

1. Open Settings → System → Reset settings.
2. Select Reset network settings (or Reset Wi-Fi, mobile network and Bluetooth).
3. Confirm the action and wait for the reboot.

On devices Xiaomi the path may differ: Settings → About phone → Reset settings → Reset network settings.

After reset:

• 🔄 Reboot your phone.
• 📶 Turn on mobile data and check the connection.
• 🔧 If necessary, reconfigure the APN (see section 3).

5. Checking blocking by IMEI and account status

If none of the previous methods worked, two critical problems are possible: 1) Your smartphone is blocked by IMEI (for example, due to loss or theft), or 2) The operator has suspended services due to debt or expired tariff.

To check the blocking by IMEI:

1. Dial on the keyboard *#06# - a unique number will be displayed IMEI.
2. Check it on the operator’s website or through the service imei.info (requires a Wi-Fi connection).
3. If the status Blacklisted (blacklisted), contact the operator to unblock.

To make sure that the problem is not in the account:

• 💳 Check the balance via the USSD command (for example, *100# for MTS).
• 📄 Check the tariff status in the operator’s personal account.
• 📞 Call support - sometimes the mobile data service is disconnected separately from the main one package.

⚠️ Attention: If the IMEI is blocked due to theft, it is officially impossible to unlock it. The use of such devices is illegal.

6. Firmware update and virus scan

Outdated firmware or malware may interfere with the correct operation of the mobile network. For example, some viruses block access to the Internet in order to force the user to install paid applications. To exclude these reasons:

System update:

• Go to Settings → System → System update.
• If an update is available, download and install it (preferably via Wi-Fi).
• After the update, reset your network settings (see section 4).

Check for viruses:

• 🛡️ Install an antivirus (for example, Kaspersky Mobile or Dr.Web Light).
• 🔍 Perform a full scan system.
• 🗑️ Remove suspicious applications, especially if they requested administrator rights.

Some firmware (for example, MIUI from Xiaomi) have built-in virus protection. To run it: Settings → Applications → Security → Scan.

7. data-i="193">If all software methods have been tried, but the mobile data still does not work, the problem may lie in

If all software methods have been tried, but the mobile data still does not work, the problem may lie in hardware:

• 📡 The antenna module is damaged (for example, after a fall or moisture).
• 🔌 The connector is faulty SIM cards.
• 🔋 The power module has failed (rarely, but occurs on older devices).

Signs of a hardware malfunction:

• The smartphone does not see none SIM card (even after cleaning the contacts).
• The network symbol constantly blinks or disappears in random places (not related to the coverage area).
• The phone overheats in the antenna area (upper part of the case).

In such cases, independent repair is impossible - diagnostics are required at a service center. The cost of repairs depends on the model:

• Samsung Galaxy S23 — antenna module replacement ~5,000–8,000 ₽.
• Redmi Note 11 — SIM connector repair ~1,500–2,500 ₽.
• Google Pixel 7 — diagnostics for free, repairs from 3,000 ₽.

⚠️ Attention: Do not try to disassemble the phone yourself - this may lead to loss of warranty or permanent breakdown. This is especially true for devices with a waterproof case (Sony Xperia, iPhone-like Android-smartphones).

FAQ: Frequently asked questions about mobile data on Android

Settings → Mobile network → Registration on the network → Update profile