Bad communication on Xiaomi Redmi Note 8 Pro? 10 proven ways to improve the signal

If your Xiaomi Redmi Note 8 Pro is getting worse at catching the network, interrupting calls or slowing down mobile Internet, the problem is not always with the operator. Most often, the weak signal is due to phone settings, outdated firmware or hardware limitations. In this article, we will analyze all possible causes of poor communication and give specific instructions on how to fix them without going to the service center.

The Redmi Note 8 Pro (codenamed begonia) is equipped with the Mediatek Helio G90T module and supports up to 4G LTE Cat.12, but even with these characteristics, users often face problems: the network disappears indoors, pages are slowly loaded, and voice communication is interrupted. We tested all methods on real devices and selected only those that give visible results after the first steps.

1. Check the basic network settings

Start with the obvious: maybe the network is just off or running in suboptimal mode. → SIM-Maps and mobile networks and make sure that:

• 📶 Mobile data is included for the required SIM-cards (if two of them).
• 🌐 The network mode is set to 4G (preferably 3G/4G (Car mode only 2G Deteriorating the speed of the Internet 10 once.
• 🔄 Automatic network selection is activated. If not, try manually selecting the operator (sometimes the phone sticks on a weak tower).

If the connection hasn't improved after the changes, move on to the next step. Importantly, after manual network selection, you may need to restart your phone.

2. Update firmware and modem

Manufacturers regularly release updates that fix communication errors. On the Redmi Note 8 Pro, check the relevance of the firmware:

1. Open Settings → About the phone → System update.
2. Click Check Updates and install the latest version of MIUI.
3. After the update, restart the device.

If there are no updates, but the connection is still poor, try updating the modem separately.

Download the latest version of modem software from the forum Xiaomi.EU (section begonia)

Connect your phone to your PC and install Mediatek VCOM drivers

Start the SP Flash Tool and only run the modem partition

Don't turn it off. USB-cable (5-7 minute)-->

Warning: Manual modem firmware can cause IMEI loss if something goes wrong.IMEI backup is mandatory (instructions below in Section 5).

3. Reset the network settings

Incorrect APN settings or configuration conflicts often cause poor communication, and you can reset them without losing data:

1. Go to Settings. → SIM-maps and mobile networks → Additionally. → Resetting network settings.
2. Confirm the action. The phone will reboot.
3. After turning on, check if the APN settings have automatically appeared (usually an SMS from the operator).

If the APNs have not recovered, add them manually:

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If after the network reset, the phone stopped seeing SIM-map, remove it, wipe the contacts with a pin and paste back.

4. check the antenna and SIM-map

Physical damage or contamination can degrade the signal. On the Redmi Note 8 Pro, the antennas are located at the bottom of the case (near the USB-C connector) and under the metal frame.

• 🔍 Integrity of the body: cracks or dents near the antenna lines (they can be seen if you illuminate a flashlight).
• 📱 SIM-card: contacts must be clean, without scratches. Try inserting it into another slot (if there are two of them).
• 🔌 Tray SIM-cards: sometimes it's not tight due to deformation. Carefully bend the metal contacts inside the tray.

⚠️ Attention: If after the fall of the phone, the connection is completely lost, the antenna plume may have departed.

5. Save and restore the IMEI (if required)

After a firmware or reset, they sometimes get lost. IMEI-- the number that causes the network to be lost:

1. Install the MTK Engineering Mode app from Google Play.
2. Launch it, go to MTK Settings → Connectivity → CDS Information → Radio Information.
3. In the Phone section 1 (phone 2 second SIM) command: AT +EGMR=1,7,"Yours_IMEI_1" AT +EGMR=1,10,"Yours_IMEI_2" (IMEI You can find it on the phone box or under the battery).
4. Reset the device.

⚠️ Attention: Incorrect input IMEI If you're not sure, contact Xiaomi's service center.

6. Optimize the work in conditions of weak signal

If you are often in areas with poor surface (basement, elevator, country house), try:

• 📡 Use a repeater: the device amplifies the operator's signal. Any model that supports it will do. 4G 1800/2600 MHz (e.g. Huawei) B315).
• 🔋 Turn off battery savings: Ultra-saving mode in MIUI Restricts the modem. Turn it off in Settings. → Battery.
• 🌍 Turn on roaming (even if you are not abroad): sometimes the phone catches the partner network better. → Mobile network → Data roaming.

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The signal repeater increases the communication level by 2-3 sticks, but requires a stable signal source (at least 1 division).

7. Check for viruses and background processes

Malware or heavy applications can overload the processor, causing the modem to fail to process the signal.

1. Install Malwarebytes or Dr.Web Light and scan the system.
2. Close all background applications through Settings → Applications → Launched.
3. Check traffic: If an app eats gigabytes in the background (like Facebook or TikTok), limit its access to mobile data.

Pay special attention to applications with rights ADMIN or SYSTEM_ALERT_WINDOW — They can block the modem from working.

8. Alternative methods (if nothing has worked)

If all of the above methods have not worked, try:

• 🔄 Reset your phone to factory settings (pre-backup!) This will delete all user data, but often solves hardware issues.
• 🛠️ Flash your phone to custom firmware (e.g. Pixel Experience or LineageOS). 4PDA.
• 📱 Replace SIM-Nano-SIM card of the new sample (old cards may not communicate well).

⚠️ Warning: Castom firmware is warranty-free and may contain errors. Install them only if you are confident in your actions.

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If after all the manipulations the communication has not improved, the problem may be a hardware failure (modem, antenna, plume), in which case a diagnosis is required in the service center.

FAQ: Frequent communication questions on the Redmi Note 8 Pro