How to set up the MTS Internet on a Xiaomi smartphone: from APN to troubleshooting

Setting up MTS mobile internet on Xiaomi smartphones seems like a simple task — until you encounter no connection, slow speed or authentication errors. SIM-card is activated, and the tariff supports data transfer, incorrect parameters APN In this article, we will examine not only the basic settings, but also the nuances that are not mentioned in official instructions, from manually entering access points to diagnosing problems with the Internet. IPv6 roaming.

Xiaomi’s smartphones (including Redmi, POCO and flagship series) feature a proprietary MIUI shell that sometimes overrides standard Android settings. For example, some versions of MIUI have APN settings hidden behind additional menus, and automatic setting via SMS from the operator may not work. We tested the instructions on devices with MIUI 12–14 and Android 11–14 to ensure that the recommendations are up to date.

1. Preparation of the smartphone to set up the Internet MTS

Before you start changing the settings, make sure that the problem is in the settings, not the hardware constraints.

• 📶 Signal Level: The top notification bar should display a network icon (e.g., a network icon, 4G or 5G). If there is no signal, the problem may be SIM-map.
• 📱 Activation. SIM-New MTS cards require activation through USSD-team *111*1# Or your personal account, without it, the Internet won't work.
• 💰 Balance and tariff: send a request *100# to make sure that the account has enough funds and Internet package is connected.
• 🔄 Flight mode: even if it is turned off, sometimes it helps to restart the smartphone with the preliminary on / off this mode.

If all the points are met, but the Internet is still missing, move to manual configuration. Note: some Xiaomi models (for example, the Redmi Note 12 Pro+) after the MIUI update reset APN settings – they will have to be re-entered.

2. Automatic setting of the MTS Internet

The easiest way is to let the operator send the configuration files themselves.

1. Open the Messages app.
2. Create a new SMS with Internet text (or settings) and send it to 1234.
3. Wait for the response with the configuration and confirm the setting of the parameters.

In most cases, this is enough, but there are nuances:

• ⚙️ On Xiaomi MIUI 14 the automatic setting may not work due to security limitations, in which case a notification will appear: "Configuration not supported".
• 📲 If SMS Not coming within 5 minutes, check if the Security app is blocking them (Section Blocking Messages).
• 🔄 After setting the settings, restart the smartphone – this will help to apply changes at the system level.

💡

If the automatic setting does not work, try sending it. SMS From another phone to your Xiaomi. Sometimes that bypasses the restrictions. MIUI.

3. Manual setting up APN for MTS on Xiaomi

If the automatic method doesn't work, you'll have to enter the settings manually.

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-MTS card (if there are several of them).
3. Press Access Points (APN) → Add an Access Point.

Fill the fields with the following data (leave the rest empty or by default):

After saving the new access point:

New access point selected in APN| list

Rebooted smartphone |

Signal level (at least 2-3 divisions) |

Unplugged. VPN (if used)-->

Xiaomi models with Dual SIM (Like Redmi. 10C or POCO X5) manually APN You may need to manually specify which SIM-The map is used to transmit data. Go back to the menu. SIM-maps and mobile networks and select Default for data.

4. set up 4G/5G network for maximum speed

Even the right one. APN Internet speeds can be slow due to the wrong type of network. MIUI It's tuned in like this:

1. Open the Settings. → SIM-maps and mobile networks → [Yours. SIM] → Type of network.
2. For 4G, select LTE (or 4G/3G/2G (auto)).
3. For 5G (If supported by the tariff and the device) — 5G/LTE/3G/2G.

Pay attention to the following points:

• 📡 If there is no coverage in your area 5G, If you force this mode to be used, you may not have a network. LTE.
• 🔄 On some models (e.g. Xiaomi) 13T) After the network type change, a reboot is required.
• 🛡️ If the speed remains low, check if the mode Saving traffic is enabled in the Settings. → Connections and sharing.

5. Removal of common errors

If the internet still doesn’t work, here are the typical problems and solutions:

🔴 Error "Authentication failed"

Reason: incorrect username/password in APN or blocked by operator.

• Check that the username and password are indicated by mts (lowercase!).
• Send. USSD-team *111*0887#, to unlock access (relevant for some tariffs).

🟡 There is a connection, but the pages are not loaded.

The reason: DNS or IPv6 problems.

• In the settings APN Add lines: Type APN: default,supl,dun DNS-servers: 8.8.8.8, 8.8.4.4
• Turn it off. IPv6 In Settings → SIM-maps and mobile networks → [Yours. SIM] → Additionally. → Protocol IP (choose IPv4).

🟢 The Internet is working, but slowly.

Causes and solutions:

• 📶 Weak signal: Try to force the network to choose LTE network-type.
• 🔄 Overloading towers: switch to 3G (choose 3G network type – sometimes this gives a more stable speed.
• 🛡️ Operator Limitations: Check the Traffic Limit *100*1#.

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If after all the manipulations the Internet did not work, try inserting SIM-If the problem persists, contact the MTS to check the card.

6. Additional settings for experienced users

For those who want to make the most of the mobile internet, there are a few advanced tricks:

🔧 Optimization MTU ping-lower

If you play online games or use VoIP (such as Zoom), reducing the MTU value can reduce delays.

1. Install Terminal Emulator from Google Play.
2. Enter the command: su setprop net.mtu 1400 (root rights required).

The optimal value is selected experimentally in the range of 1400-1500.

🌍 Forced connection to a specific cell

If there are several towers of MTS, but the smartphone clings to the overloaded, you can manually select the base station:

1. Enter the dialer ##4636##.
2. Select Phone Information → Network settings.
3. Turn off Auto Network Selection and manually select an operator (e.g. MTS RU).

⚠️ Attention: forced network selection can cause a loss of connection when moving between coverage areas. Use this method only if you are confident in the stability of the chosen cell.

7. Setting up the MTS Internet on Xiaomi in roaming

When traveling abroad or to regions with roaming, APN settings may be reset to avoid problems:

1. Before you travel, save your current APN settings (take a screen photo or export through the APN Backup & Restore app).
2. When roaming, use the APN of the MTS partner (check it with *111*0887#).
3. Turn off automatic network selection in Settings → Mobile Network → Network Operators and select a local operator manually.

Important: In some countries (e.g. Turkey or the UAE), MTS works through partners, and the standard APN internet.mts.ru may not work.

⚠️ Attention: roaming charges not only traffic, but also network connection times. Turn off mobile internet when it is not needed to avoid unexpected costs.

Frequently asked questions