How to set up mobile Internet on Xiaomi smartphones: from APN to troubleshooting

Mobile Internet on Xiaomi may not work out of the box even with installed SIM-The reasons vary from incorrect settings. APN before software failures in firmware MIUI. This article will help you understand the nuances of the setting 4G/5G on all models of the brand – from budget Redmi Note to flagship Xiaomi 14. We will look not only at the basic steps, but also at the rare cases when the network catches, but the pages do not load or the speed drops to the point of getting a new page. 2G.

Feature of Xiaomi smartphones – dual SIM-And this makes it harder for newcomers to do this, but it gives advanced users more control. POCO F5 You can manually switch between 4G and 5G each SIM Separately, Redmi 12 to limit background traffic to save battery life, and in this article you will find relevant data for MTS, Beeline, MegaFon, Tele2 and virtual providers like Yota or Tinkoff Mobile.

If you have a problem with "no Internet when you have a network" or an H+ icon instead of 4G, don't rush to bring your phone to the service. 80% of the time, the problem is solved in 5 minutes through the settings menu. And for the remaining 10%, we have prepared a section with diagnostics - from IMEI check to reset network settings.

Preparation: verification SIM-maps and compatibility

Before you dig into the settings, make sure the problem isn't hardware or tariff. Start with basic checks:

• 📱 Type SIM-Xiaomi in recent years (starting with Redmi 9 2020) supports only nano-SIM. If you have a micro-SIM or mini-SIM, it will have to be trimmed or replaced in the cabin of the operator.
• 🔄 Dual-band support: on models with Dual SIM (for example, Xiaomi 13T) second-second SIM often only works in the mode 2G/3G. Check if the main card is inserted into the second slot.
• 📡 Frequency support: if you are using POCO X5 Pro 5G In regions with poor coverage, make sure that the phone supports the frequencies of your operator. n78 (3500 MHz for 5G, And in the middle of nowhere, it can only be B20 (800 MHz for 4G.

Modern Xiaomi smartphones automatically detect the type of network, but sometimes manual configuration is required. For example, on the Redmi A2, the first time you activate the SIM, you may notice “Operator configuration update is required” – this can not be ignored. If the notification is missing, try manually updating the profile:

⚠️ Attention: if after insertion SIM-phone call card PUK-If you try it at random, after 10 attempts, the card will be locked forever. PUK You can find it on a plastic carrier. SIM or in the operator's personal office.

To check compatibility with 5G:

1. Go to Settings → About the phone → All the characteristics.
2. Find the Network or Network Support line.
3. If there is NR (5G) on the list, your Xiaomi supports the fifth generation, unless LTE is a maximum of 4G.

Automatic setting APN: when she's working

In most cases, Xiaomi itself tightens the parameters. APN post-installation SIM-But the automatic setting may not work properly if you:

• 🔄 You moved. SIM from another phone (especially iPhone or Samsung).
• 📱 The phone is purchased abroad (for example, the global version of Xiaomi 13 Lite for Europe).
• 🔧 You reset your settings to factory or upgraded MIUI before.

To start the automatic setting:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if two of them).
3. Slip to Access Points (APN).
4. In the upper right corner, press three dots (⋮) and select Reset to default values.
5. Reboot the phone.

If the Internet doesn't work after the reboot, check if a new APN profile appears, and sometimes the system creates it, but it doesn't activate it.

1. Go back to APN Settings.
2. Select a profile with your carrier’s name (e.g. MTS Internet).
3. Save the changes.

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If the automatic setting didn’t work, try inserting it. SIM-The card is sent to another phone (at least 5 minutes) and then returned back to Xiaomi.

3.Manual APN setup for popular carriers

If the automatic method does not work, you will have to enter the parameters manually. Below are the current APN settings for the main Russian operators (data checked in June 2026). Please note: for virtual operators (for example, Tinkoff Mobile), use the parent network settings (Tele2 in the case of Tinkoff).

Instructions for manual creation of APN:

1. Go to Settings. → SIM-maps and mobile networks → Access points (APN).
2. Click on Add (the + icon in the upper right corner).
3. Fill in the fields as above. Leave the rest of the settings (e.g., MMSC or MCC/MNC) unchanged.
4. Save the settings and select the profile you created in the list.
5. Reboot your phone – this is a must!

The name field contains the operator name.|APN typo-in|Type of authentication — PAP|Profile saved and selected as active|Phone reboots after changes-->

If the Internet has not worked after manual setting, check:

• 🔍 Region SIM-If you use a MegaFon card purchased in Moscow, in the Rostov region, you may need another card. APN (For example, Internet.megafon.ru instead of Internet).
• 📶 Network type: in settings APN There's a field. APN (or APN For the Internet, it should be default,supl. If you only specify default, add.supl manually.

4. Network type setup: 2G, 3G, 4G or 5G

Even with the right APN, mobile internet can run slowly if the phone is tied to an outdated standard (e.g. 3G instead of 4G). Xiaomi has two layers of network type management: global (for all SIMs) and individual (for each card separately).

To change the priority of the network:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose the right one. SIM-map.
3. Tap on the network type (or preferred network type).
4. Choose the best option: 4G only (LTE) for stability (recommended for most regions); 4G/3G/2G (auto) if 4G coverage is unstable; 5G/4G/3G/2G only if your Xiaomi supports 5G and you are in coverage; 2G only for maximum battery savings (speed will be like 2005).

On models with a MediaTek processor (for example, Redmi Note) 12 or POCO M5) When choosing a regimen Only 4G You may lose your voice. In this case, use the 4G/3G/2G or activate the VoLTE option in the settings SIM-map.

To diagnose the current type of network:

• 📊 In the status bar, look at the network icon: 5G — fifth-generation. 4G or LTE — Fourth generation.+ — «improved» 3G (up to 42 Mbps). 3G or H is the standard 3G. E — EDGE (obsolete 2.5G). G — GPRS (2G, dialap-like).
• 🔧 From the engineering menu (code ##4636##) select Phone Information and see Set preferred network type.

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If the phone is “hanging” on H+ instead 4G, Try to manually select the network: Settings → SIM-map → Network search. Sometimes, automatic mode picks a suboptimal tower.

5. Diagnostics of problems: why there is no Internet when there is a network

If the network indicator shows 4G, but the pages are not loading, the problem may be one of the following components:

• 🔌 APN: Profile saved but not activated (check the tick next to the name).
• 📵 IMEI: If it is dropped (for example, after firmware), the network will be “caught”, but the Internet will not work.
• 🔒 firewall: MIUI It has a built-in firewall that can block mobile traffic for individual applications.
• 🔄 Roaming: if you are roaming, some operators require a separate activation of the service "Internet in roaming».
• 📱 Flight mode: sometimes activated accidentally (for example, through a notification panel) and blocks the network.

Diagnostic algorithm:

1. Check IMEI: Dial *#06# - two 15-digit numbers should appear (if one or both nulls, IMEI reset). To restore IMEI on Xiaomi, you will need an engineering menu or PC with QCN Rebuilder.
2. Turn off firewall: Go to Settings → Applications → Permissions Management → Firewall. Make sure that mobile traffic is allowed for the browser and other applications.
3. Check balance and fare: Dial *100# (MTS), *110*09# (Beeline) or a similar command for your operator. Make sure you have a zero balance and high-speed traffic.

If the problem persists, try resetting your network settings:

1. Go to Settings → About the phone → Reset settings.
2. Select Network Reset (not to be confused with a full reset!).
3. Confirm the action and restart the phone.

⚠️ Note: Network reset will delete all stored Wi-Fi passwords and associated Bluetooth devices. If you have important connections (such as the Mi Band smartwatch), write them down in advance.

6. Speed Optimization: How to Speed Up Mobile Internet

If the internet is working but slow, try these methods (from simple to complex):

• 🔄 Switch the network type: sometimes 3G works more stable 4G in densely populated areas due to overloading towers.
• 📡 Turn off automatic network selection: manually select operator in Settings → SIM-map → Networking.
• 🔋 Activate Traffic Saving Mode: C Settings → Connections and sharing → Save traffic, disable background activity of unnecessary apps.
• 🛠️ Update the firmware: go to Settings → The phone. → Update the system and install the latest patches.

For advanced users:

• 🔧 Change. DNS: By default, operators use their DNS-Try 1.1.1.1 (Cloudflare) or 8.8.8.8 (Google). DNS Changer from Google Play. Select one from a public DNS And apply the settings.

Change the frequency band (for experienced ones only):

Xiaomi

Band Selection

MegaFon

B3 (1800 MHz)

B7 (2600 MHz)

To check the actual speed (not the one the operator shows), use:

• Speedtest by Ookla is a classic server-select test.
• nPerf – shows not only the speed, but also the latency (ping) and stability of the connection.
• OpenSignal analyzes network coverage in your area.