How to speed up the Internet on Xiaomi smartphone with a TV2 SIM card: the full guide

Slow Internet on Xiaomi with a Tele2 SIM card is a problem that many users face. Speed can “sink” both due to the operator’s settings and due to the features of the MIUI firmware. In this article, we will analyze all possible causes of low speed and ways to eliminate them: from basic (reboot the phone) to advanced (manual setting of APN and LTE frequency selection).

Tele2 is a dynamic frequency operator that sometimes prioritizes subscriber traffic with other tariffs. Xiaomi is further influenced by power optimization, which may limit background data transfer. We tested all methods on Redmi Note 12 Pro+, POCO X5 Pro and Xiaomi 13T models, as shown in the table below.

Important: if the speed drops only in certain places (for example, at home or at work), the problem may be overloaded towers or weak signal, in which case only changing the location or buying a repeater will help.

1. Checking the current speed and diagnosing the problem

Before you set up anything, you need to know what speed you're at right now and what's stopping you.

1. Run the speed test on the Speedtest website or in the OK Wallet app (there is a built-in test).
2. Compare the results with the declared rate of your tariff (you can see in the personal account of Tele2).
3. Pay attention to Ping (latency): If it is above 100ms, the problem may be in an overloaded tower.

Normal indicators for Tele2 in 2026:

• 📶 4G (LTE): 10–50 Mbit/s (in cities up to 100 Mbit/s).
• 🌐 5G: 100-300 Mbps (not available in all regions).
• 📡 Ping: 20-60 ms (ideally).

If the speed is below normal, move to the next section: If the test shows high speed, but the pages load slowly - a problem in the DNS or browser (we will discuss this in section 5).

Basic settings: reset, flight mode and network selection

Start with simple steps – they help in 30% of cases:

• 🔄 Reset the phone. Hold the power button for 10 seconds until the shutdown menu appears.
• ✈️ Turn off or turn off flight mode for 30 seconds. After shutdown, the phone will reconnect to the tower from a blank slate».
• 📡 Select the network manually: go to Settings → SIM-maps and mobile networks → Select the network and select Tele2 (not Automatic»).

Important: if after manually selecting the network speed has not changed, go back to Automotive mode - the phone can "grab" on a weak tower.

If the basic methods didn’t help, go to the APN settings.

3. Set up APN for Tele2 on Xiaomi

APN (Access Point Name) is the operator’s “entry point” to the Internet. Incorrect APN settings can reduce speed by 2-3 times. Xiaomi sometimes gets confused after the MIUI update.

To set up APN for Tele2:

1. Go to Settings. → SIM-maps and mobile networks → Tele2. → Access points (APN).
2. Click on the three dots in the top right corner and select the New Access Point.
3. Fill in the fields exactly as in the table below (leave the rest empty or by default):

After saving, restart your phone. If the speed hasn't increased, try an alternative APN:

• 🔧 For tariffs with unlimited Internet: unlim.tele2.ru (instead internet.tele2.ru).
• 🌍 Roaming: roam.tele2.ru.

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If the APN changes, go back to the settings and select the default APN (usually called Tele2 MMS or Tele2 Internet).

4. Optimization of network settings Xiaomi

MIUI has hidden settings that can limit speed to save battery life.

1. Go to Settings → Battery and Performance → Battery Mode and select Performance (not Balanced or Saving).
2. In Settings → Special features → Developer settings (if no point, activate developer mode) find: Background Limitation for mobile data → Disable. Mobile data speed limit → Disable. Aggressive Wi-Fi Shutdown → Disable (if any).

Critical setting for Xiaomi: on the menu SIM-maps and mobile networks → Television2 → Type of network, select LTE (recommended 5G/LTE (If it's maintained, never leave it. 3G/2G — It slows down the speed in 10 once!

If you have a Redmi or POCO with a MediaTek processor (like the Redmi Note 11 or POCO M5), check out:

• 📶 Band Lock: Some models stick at low frequencies. To reset, type in ##4636##, select Phone Information, and set the preferred network type to Set LTE only.
• 🔋 Power saving modem: in the developer settings, turn off mobile data in sleep mode.

5. Change DNS and Browser Optimization

If the test speed is high, but the pages load slowly, the problem is: DNS-Tele2 uses standard servers. DNS ISPs that sometimes slow down. Try alternatives:

1. Install 1.1.1.1: Faster Internet (from Cloudflare) or DNS Changer.
2. Choose. DNS: 🚀 Cloudflare: 1.1.1.1 and 1.0.0.1 (fastest). 🛡️ Google DNS: 8.8.8.8 and 8.8.4.4 (stable). 🌍 AdGuard DNS: 94.140.14.14 and 94.140.15.15 (block advertising).

For manual settings (without applications):

1. Go to Settings → Wi-Fi → Additional → DNS settings (for mobile data, this path may differ).
2. Select manually and enter IP-address DNS (e.g. 1.1.1.1).

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Changing DNS speeds up the loading of sites by 20-50%, but does not affect the speed of downloading files (torrents, updates).

6. Advanced methods: LTE frequency selection and VoLTE disabling

If you’re a confident user, try manual frequency selection. This is true for Xiaomi on Snapdragon (like Xiaomi 12T or POCO F4), where Band Selection support is available.

For this:

1. Install Network Signal Guru (root rights required) or MTK Engineering Mode (for MediaTek).
2. In Network Signal Guru, select: 📡 Band 3 (1800 MHz) and Band 7 (2600 MHz) – the main ones for Tele2. 🚫 Disable the Band 20 (800 MHz) – it’s slow but long-range.

Save the settings and restart the phone.

Warning: The wrong frequency selection can lead to total network loss, and if you're not sure, skip this step.

⚠️ Attention: on some firmware MIUI (especially global) manual frequency selection is reset after rebooting. To fix the settings, use the Tasker application with the Secure Settings plugin.

Another nuance is VoLTE (voice through voice) 4G). Sometimes it conflicts with data transmissions to shut down:

1. Go to Settings. → SIM-maps and mobile networks → Tele2. → Challenge 4G.
2. Turn off the VoLTE option.
3. Reboot the phone.