How to enable and configure mobile Internet on Xiaomi Redmi Note 9: the complete guide

Why the Redmi Note 9 doesn’t have mobile internet and how to fix it

Mobile Internet on Xiaomi Redmi Note 9 can suddenly stop working for a dozen reasons, from banal forgetfulness (turned off the data transmitter) to hardware malfunctions. APN, misplaced SIM-This article will help you understand how to turn the Internet on the Redmi Note 9 manually, check the network settings and eliminate typical errors without going to the service center.

We will look at all possible scenarios, from basic data activation to restoring network parameters after a phone reset. Particular attention will be paid to settings for Russian operators (MTS, Beeline, MegaFon, Tele2), since their configurations often differ from the standard. If you just bought a Redmi Note 9 or faced a problem after updating MIUI, here you will find a solution.

Before you start settings, make sure that:

• 📶 Your tariff includes a mobile Internet package (check the balance through the USSD-*100# command or operator's personal account).
• 📱 SIM-card correctly installed in the slot SIM 1 SIM 2 (both slots support Redmi Note 9) 4G, Sometimes operators link the Internet to a particular slot).
• 🌐 There are no coverage outages in your region (check on the operator’s website or through the app, for example, “My MTS»).

Basic Verification: How to Enable Mobile Data Transfer

Let's start with the simplest thing: activate mobile internet through the notification panel and settings menu, and users often accidentally turn off data transmission, saving battery power, and then forget to turn it back on.

Method 1: through the notification curtain

1. Swipe your finger down the screen to open the notification bar.
2. Find the Mobile Data icon (usually it looks like two up-and-down arrows or an antenna with waves).
3. Touch the icon -- if it's blue, the Internet is on. If it's gray, tap it again.

Method 2: through the MIUI settings

1. Open the Settings app (cog icon).
2. Go to section. SIM-maps and mobile networks.
3. Choose yours. SIM-card (if two of them).
4. Activate the "Mobile Data" switch.

If the internet doesn’t work after these actions, move on to the next section – most likely the problem is with APN settings or network selection.

💡

Redmi Note 9 can be switched between SIM-Internet maps: press the mobile data icon in the notification curtain for 2 seconds and select the desired one SIM.

Configuring APN access points for Russian operators

The Access Point Name (APN) is the “address” that connects the phone to the carrier’s Internet. If the APN settings are lost (for example, after resetting or updating the MIUI), the mobile Internet will not work.

How to open the APN menu:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map.
3. Slip Access Points (APNs).
4. In the upper right corner, press ⋮ → New access point.

Enter the settings for your operator (if the access point is already available, select it and edit it):

After entering the parameters:

1. Save the settings (Save button or tick at the top).
2. Select the created access point in the list.
3. Reboot your phone (it is a must!).

Is the access point stored as active?|Is it correct to enter? APN (misspelled)?|Is the phone reloaded?|Is mobile data transfer enabled?-->

⚠️ Attention: If on the list APN You already have an access point with your operator’s name (for example, «MTS Internet"), don't create a new one - edit the existing one. APN They can cause conflicts.

Selection of network type: 4G, 3G or 2G

By default, the Redmi Note 9 automatically connects to the fastest network available (4G → 3G → 2G). However, sometimes the automatic mode fails, especially in areas with unstable coverage, in which case it is necessary to manually prioritize the network.

How to change the type of network:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map.
3. Tap the network type.
4. Choose one of the options: 4G (recommended) - maximum speed, but the battery goes down faster. 3G - medium speed, suitable for calls and instant messengers. 2G - only calls and SMS (the Internet will be extremely slow). Only 4G (LTE) - forced 4G mode (may not work in some regions).

If you choose 4G only and you don't have coverage, the internet will go completely out of the way, in which case go back to Automotive or select 3G.

Problems with SIM-card: checking the slot and rebooting

If the mobile Internet is not working even after setting up APN, The reason may be in an incorrect installation. SIM-On the Redmi Note 9, both slots support cards or damage. 4G, But sometimes operators link the Internet to a particular slot (usually a single one). SIM 1).

How to check:

1. Turn off the phone.
2. Remove the tray for SIM-cards with a paper clip (hole on the right on the upper end).
3. Make sure that SIM-The card is set with gold contacts down and fits tightly to the tray.
4. Try to rearrange. SIM-card to another slot (for example, from SIM 2nd SIM 1).
5. Turn on your phone and check the internet.

If SIM-card damaged (scrapes, scratches on contacts), try inserting another or contact the operator's cabin for a replacement. SIM-map PIN-code – if yes, enter it when requested.

⚠️ Attention: Redmi Note 9 slot SIM 2 is combined with a memory card slot. If you use a microSD, SIM-the map must be installed in SIM 1.

Resetting network settings and software updates

If all the previous steps failed, the cause could be a software failure in network settings, in which case the network reset or the MIUI update will help.

How to reset network settings:

1. Open the Settings. → The phone.
2. Slip Settings Reset.
3. Select Network Settings Reset (this will remove saved Wi-Fi, Bluetooth, and mobile settings).
4. Confirm the action and restart the phone.

After resetting, you will have to re-enter your Wi-Fi passwords and configure your APN (see section above).If the problem persists, check the firmware's relevance:

1. Go to Settings → About the phone → System update.
2. Click Check for updates.
3. If a new version of MIUI is available, install it.