Xiaomi Redmi 9 remains one of the most popular budget smartphones even years after the release – thanks to the balanced characteristics and reliable platform MediaTek Helio G80. However, many users face problems when connecting the mobile Internet for the first time: the access point is not activated, the speed leaves much to be desired, the operator requires manual configuration. APN. In this article, we will analyze all the nuances - from the installation SIM-maps to optimize the network for maximum speed.
The Redmi 9 feature is that it supports two nano-SIMs at the same time (or one SIM + microSD), but not all slots are equally complete. For example, the second slot may not support 4G from some operators. It is also important to consider that MIUI sometimes resets APN settings after updates - this is not a bug, but a feature of the security system. We will show you how to avoid typical errors and configure the Internet in 5 minutes.
Preparation of the smartphone: verification SIM-card-slots
Before setting up the internet, make sure your SIM-The card is compatible with Redmi 9:
- 📱 Nano-SIM format (if you have a micro or standard size) SIM — Cut it or contact the operator for a replacement)
- 🌐 Communication standards: 2G (GSM), 3G (WCDMA), 4G (LTE bands 1/3/5/7/8/20/28/38/40/41)
- ⚡ Dual-band Wi-Fi (2.4 GHz and 5 GHz), but it doesn't affect mobile internet
Redmi 9 has two slots for SIM-The cards, however, work on the principle of "either-or" 4G:
- 🔢 Slot 1 — supportive 4G/3G/2G (recommended for the Internet)
- 🔢 Slot 2 — It can only work in the mode 3G/2G, if 1 busy 4G (depends on the operator)
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If you use two of them SIM-Cards, install the main (with the Internet) in the first slot - this guarantees support 4G. Second second SIM will work in the mode 3G call-in.
To check if the SIM is installed correctly:
- Turn off the phone and remove the tray for SIM-cards with a paper clip (hole on the right).
- Make sure that the contacts SIM-The card is on top and it fits tightly to the tray.
- Turn on the phone and wait for the network signal to appear (an antenna icon in the status bar).
Automatic Internet Configuration (Recommended Method)
Most Russian operators (MTS, Beeline, MegaFon, Tele2) support automatic sending of mobile Internet settings via the Internet. SMS. This is the easiest way, but it doesn’t always work, for example. SIM-Your card is new or your operator does not support your region.
Instructions for automatic setting:
- Go to Settings. → SIM-maps and mobile networks → [Yours. SIM-map].
- Slip on Access Point (APN).
- In the upper right corner, press three dots (⋮) and select Reset to factory settings (this will remove the old ones) APN, if they were).
- Send. SMS with the text Internet (or apn) to the short number of your operator: 📶 MTS: 1234 📶 Beeline: 5100 📶 MegaFon: 5049 📶 Tele2: 679
After receiving the SMS with settings, restart the phone.
If the automatic setup didn’t work (for example, SMS didn’t come or the Internet didn’t work), go to manually configure APN – this method is more reliable, although it requires more action.
Manual setting of APN for all operators
APN (Access Point Name) is the “address” at which the phone connects to the operator’s Internet. If it is not configured correctly, the Internet will not work even if there is a network signal. Below we will give the current APN settings for the main Russian operators (2026).
| Parameter | MTS | Beeline | MegaFon | Tele2. |
|---|---|---|---|---|
| Name. | MTS INTERNET | Beeline Internet | Megafon | Tele2 Internet |
| APN | internet.mts.ru | internet.beeline.ru | internet | internet.tele2.ru |
| User name | mts | beeline | gdata | (leave empty) |
| Password. | mts | beeline | gdata | (leave empty) |
| Type of authentication | PAP | PAP | PAP | PAP |
To enter these settings on Redmi 9:
- Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Access points (APN).
- Click Add Access Point (the + icon in the upper right corner).
- Fill in the fields as above. Leave the remaining parameters (e.g., MMSC, Proxy) blank if they are not specified.
- Save the settings and select the APN created in the list (check or tap it).
- Reboot the phone.
To change the network mode:
- Open the Settings. → SIM-maps and mobile networks → [Yours. SIM].
- Select the network type (or preferred network type).
- Install 4G (preferably) or 3G if 4G doesn't catch.
What if 4G doesn’t catch?
Also, pay attention to the mode of data transfer:
- 🔄 Mobile data is the usual mode (the Internet always works).
- ⏸️ Traffic savings – limit background data transfer (good for battery savings).
- 🚫 Disconnect mobile data – complete Internet shutdown.
Typical Problems with Mobile Internet
If the Internet still does not work after all the settings, check the following points:
⚠️ Note: if the status bar displays the icon E (Edge) instead of 4G or+, This means that the phone is connected to the network. 2G. In this mode, the Internet speed will be extremely low (up to 0.5 Mbit / s). 4G or 3G manually.
Common mistakes and their solutions:
| Problem. | Possible cause | Decision |
|---|---|---|
| Internet is not turned on (Icon! on the network icon) | No coverage or SIM-card not activated | Check balance, call the operator or reboot the phone |
| Websites are not opened, but there is a signal | Incorrect APN or DNS blocking | Reset the APN to factory or enter manually (see table above) |
| The Internet only works in some applications. | Background traffic restrictions in MIUI | Open Settings → Applications → Traffic Management and Remove Restrictions |
| Speeds below 1 Mbps with a full 4G signal | Overloading of the operator's network or tariff restriction | Check the speed at speedtest.net and contact the operator |
If nothing helps, reset your network settings:
- Go to Settings → About the phone → Reset settings.
- Select Network Settings Reset (does not reset application data!).
- After the reboot, reset the APN setting.
Optimizing speed and saving traffic
Even if the internet is up and running, its speed can be unstable. Here are some ways to improve the connection on Redmi 9:
- 📶 Turn on the plane mode for 30 seconds, then turn off - this will reset the connection to the network.
- 🔋 Turn off battery savings for apps that need a stable internet connection (like YouTube or Google Maps).
- 🌐 Use it. DNS from Google or Cloudflare: Google DNS: 8.8.8.8 and 8.8.4.4 Cloudflare DNS: 1.1.1.1 and 1.0.0.1 To change DNS, Go to Settings. → Wi-Fi → Additionally. → Settings DNS (It also works for mobile internet).
To save traffic:
- 📉 Include Traffic Savings in Settings → SIM-maps and mobile networks → Transfer of data.
- 🔄 Limit background data transfers for unnecessary applications in Settings → Annexes → Traffic management.
- 📱 Use Lite versions of apps (e.g. Facebook Lite, Messenger Lite).
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If you often lose communication in subways or elevators, turn on Improved 4G Mode (if any) in the settings.This feature automatically switches between 4G and 3G when the signal is weak.
Verification of tariff and SIM-card compatibility
Sometimes the problem is not the phone, but the tariff or SIM-Make sure that you have a map:
- 💳 Yours. SIM-card 4G (old-fashioned SIM can only work in 2G/3G).
- 📊 Your tariff includes a package of mobile Internet (check in the operator’s personal account).
- 🌍 You're in the coverage area. 4G your operator (check on the operator’s website).
If you use a virtual operator (e.g. Tinkoff Mobile, SberMobile), note that they often rent networks from major operators and may have restrictions.
- Tinkoff Mobile runs on Tele2, so APN must be internet.tele2.ru.
- SberMobile uses MegaFon, but may require separate APN settings.
To check which operator provides the connection to your SIM-map:
- Enter the dialer code: ##4636##.
- Go to the tab Information about the phone.
- See the Network Operator line (e.g. 25001 MTS-RU).