Why your Redmi Note 8 Pro is slowing down on the network: the main reasons
Slow internet on Xiaomi Redmi Note 8 Pro is a problem that even owners of devices with 4G+ support and a powerful Mediatek Helio G90T processor face. Most often, hardware limitations are not to blame, but incorrect settings, congested networks or software conflicts. For example, background applications can eat up to 30% of bandwidth, and automatic network selection is not always optimal for your region.
Feature Redmi Note 8 Pro β support Dual 4G VoLTE, which theoretically should double the speed, but in practice often works with failures due to errors in the firmware MIUI. Another nuance: the phone can "stick" on congested frequencies LTE Band 3/7/20, although in your location available freer Band 1/8. Next we will analyze how to fix without root rights and complex manipulations.
1. Optimization of mobile Internet settings
Start with the basic network settings. Many users don't even realize that MIUI has additional options to speed up the connection. The first thing to do is force 4G on (rather than leaving "Auto"), because the automatic switching algorithms are often wrong.
Go to Settings. β SIM-maps and mobile networks β [choose SIM] β Network type and install only LTE. If you are stable in your area 4G, I'll add it right away. 10-15% To check, use the NetMonster or CellMapper app to show you which frequencies are available nearby.
- πΆ Turn off data roaming if you are not traveling: it can force you to switch to slow partner carrier networks.
- π Reset the settings. APN Up to standard: sometimes operators update settings, but the phone continues to use outdated ones.
- π‘οΈ Turn off "Smart Mode" in the settings SIM-Cards β It artificially limits speed to save battery.
β οΈ Note: If the Internet is completely lost after the change of the type of network, return the settings to the Auto and check the coverage through Speedtest. In some regions (for example, in the subway), the phone may "hang" on the search. 4G, though 3G works more stable.
Manual control LTE-frequency (without root)
Redmi Note 8 Pro supports up to 7 LTE-It's not the fastest range, but it's the default range. MIUI There's a hidden menu for manual selection. This method works on firmware before you can get it. MIUI 14 inclusive.
Enter the dialer code in the phone number:
##4636##Go to the phone information section, then scroll down to Set the network type. Here you can manually select priority ranges.
| Region | Recommended ranges | Expected speed increase |
|---|---|---|
| Moscow, SPb | LTE Band 3, 7, 20 | 20% |
| Siberia, Ural | LTE Band 7, 38 (TD-LTE) | 25% |
| South of Russia | LTE Band 1, 3, 7 | 30% |
| Metro/subway | LTE Band 31 (850 MHz) | Up to 40% (best penetration) |
Important: After manually selecting ranges, the phone can search for the network longer when moving between coverage areas. If you notice frequent cliffs, return the settings to Auto.
Enter the engineering code ##4636##
Select "Phone Information"
Scroll to "Install a network type"
Identify a priority band for your region
Reboot the phone-->
Cleaning the system of background traffic eaters
Even in standby mode, the Redmi Note 8 Pro can spend up to 500 MB of traffic per day on background processes, social networks, instant messengers and system services MIUI. For example, Mi Cloud syncs data every 15 minutes, and Google Play Services updates geolocation for advertising.
Open Settings β Applications β Application Management and sort by traffic consumption.
- π± Facebook/Instagram: Turn off "Video Autoupload" and "Background Activity" in the application settings.
- π¬ Telegram/WhatsApp: Limit Automatic Media Downloads to Settings β Data and memory.
- π Browsers: In Chrome, turn off page preloading (Settings) β Confidentiality β Pre-loading).
- βοΈ Cloud Services: Turn off auto sync for Mi Cloud, Google Photos and Dropbox.
β οΈ Note: Do not disable background activity for com.android.phone and com.miui.securitycenter system applications β this may disrupt the communication and protection module.
π‘
Use the NetGuard app (without root) to block background traffic for individual applications, which creates a local VPN and filters requests without affecting the speed of the main connection.
4.Setting up Wi-Fi for maximum speed
If the problem with slow internet only occurs over Wi-Fi, the settings of the router or the phone itself are to blame.Redmi Note 8 Pro supports Wi-Fi 5 (802.11ac), but can connect to slower standards by default.
First, check the current connection speed:
- Connect to Wi-Fi.
- Open Settings β Wi-Fi β [your network] β Speed.
- If the value is below 300 Mbps, then the phone uses an outdated 802.11n protocol.
To force 802.11ac to be enabled:
- Go to Settings β Wi-Fi β Additional β Wi-Fi mode.
- Select 802.11a/n/ac (for 5GHz) or 802.11n/ac (if 2.4GHz is not needed).
- Turn off the option Automatic Open Network Connection β it can cling to weak access points.
We also recommend changing your DNS settings on your router or directly on your phone.
- π Cloudflare: 1.1.1.1 and 1.0.0.1
- π‘οΈ Google DNS: 8.8.8.8 and 8.8.4.4
- π·πΊ Yandex.DNS: 77.88.8.8 and 77.88.8.1
How to Check the Real Speed of Wi-Fi
5. Hardware methods: from antenna to cooling
If software methods donβt work, the problem may be physical limitations.The Redmi Note 8 Pro has two 2Γ2 MIMO antennas, but their effectiveness is reduced by:
- π Overheating: at temperatures above 45Β°C. The communication module automatically reduces the power.
- πΆ Screening: metal case or case with magnets degrade the signal.
- π Battery discharge: When charged below 15%, the phone limits the power consumption of the module 4G.
A practical solution:
- Remove the case while using the mobile Internet β this can add 5-10 Mbps.
- Use an external antenna (e.g. Xiaomi Mi WiFi Amplifier 2) to amplify the signal in low-course areas.
- Cool your phone: If the case is hot, take a break for 10 minutes or use a cooling stand.
β οΈ Do not use "folk" methods like foil on the antenna - this can lead to damage. RF-The module is re-reflected, and you need certified repeaters to actually amplify the signal.
π‘
Physical methods only increase speed in low signal conditions, and if you have an already stable -80 dBm, cooling or removing the case will not have a noticeable effect.
6. Alternative methods: from firmware to VPN
If standard methods don't work, consider radical measures, such as custom firmware like Pixel Experience or LineageOS often optimizes the communication module better, but this requires unlocking the bootloader and can be insecure.
Safer options:
- π Resetting network settings: Settings β System system β Resetting settings β Resetting Wi-Fi, mobile network and Bluetooth settings, which deletes all saved passwords and APN, But often solves problems with "sticking" at slow frequencies.
- π‘οΈ Use of the VPN: some operators troll traffic for certain services (for example, torrents or streaming). VPN Like ProtonVPN or Warp, it can bypass these limitations.
- π‘ Plane mode: Turn it on for 30 seconds, then turn it off - this will reset all network connections and force the phone to reconnect to the nearest tower.
The Redmi Note 8 Pro on MIUI 12.5+ has a hidden Network Signal Guru feature that analyzes the quality of communication.
adb shell am start -n com.android.settings/.NetworkSignalGuruActivityThis tool will show detailed information about the neighboring towers and help you choose the best one.
7.Verification for viruses and malware
Malware can not only steal data, but also use your traffic for DDoS attacks or mining. for example, the Android.Click.312 Trojan replaces advertising and consumes up to 1 GB per day, and Android.Triada.231 is built into system processes and masquerades as com.android.phone.
How to check:
- Install Malwarebytes or Dr.Web Light and perform a deep scan.
- Check the list of installed applications for suspicious ones (such as those with names like System Update, Flash Player, or Clean Master).
- Open Settings β Battery & Performance β Battery usage and find apps with abnormally high consumption (e.g. 20% in 1 hour in the background).
β οΈ Note: Some "optimizers" like DU Speed Booster is the source of advertising software. For cleaning, use only proven antivirus or built-in security from Xiaomi.