Xiaomi smartphone users often face the need to manage network traffic, whether saving a limited data packet or solving technical problems with connectivity. Owners of the popular Redmi 9 model are no exception, and the question of how to forcefully reduce speed or completely limit data transfer becomes relevant in various situations. Understanding the mechanisms of the mobile network allows you to effectively control costs and optimize the operation of the device.
There are several proven ways to influence the bandwidth of the communication channel, ranging from standard operating system settings to deeper manipulation of access points. It is important to realize that a complete βoffβ speed actually means breaking the connection or putting the device in a mode where data packet exchange is impossible or extremely difficult. In this article, we will discuss in detail all available methods for your model.
Before you make any changes, you have to decide on the ultimate goal: do you just need to save traffic, fix a connection error, or test the network? This is the choice of a specific tool, whether it's a standard settings menu or an engineering mode. Let's look at the basic solutions.
Use of the built-in MIUI traffic limiter
The safest and most recommended way to control data consumption is to use the regular features of the MIUI shell. Xiaomi Redmi 9 has a powerful security module that allows you to flexibly adjust the limits for each application or for the entire system.
To activate this feature, you need to go to Security, which is a system application, and then select Traffic. Here you will find the restriction settings where you can set a daily or monthly limit. When the device reaches the set value, the mobile Internet will automatically be disabled, which is equivalent to a drop in speed to zero for user tasks.
You can also choose to restrict network access for heavy programs that consume traffic in the background, thereby keeping speed for important tasks, especially for Redmi 9, which can be used as a primary or backup device.
- π± Open the Security app on the home screen.
- π Go to the Traffic section and click on the settings gear.
- π Set the traffic limit switch to the active position.
- βοΈ Set individual limits for specific programs in the list.
Modifying the APN access point to reduce speed
A more technical approach involves changing the parameters of the APN (Access Point Name) access point, which allows you to make changes to the configuration of the connection with the operator, which in some cases leads to unstable operation or a significant decrease in data transfer speed. On Xiaomi Redmi 9, this is done through the menu of mobile networks.
The method involves adding new characters to protocol fields or changing the type of access point to unsupported values, such as changing the APN or Port field to incorrect values can cause the device modem to try to connect via outdated or slow protocols, such as GPRS instead of 4G/LTE.
β οΈ Attention: Incorrect change of settings APN This can cause you to lose access to the Internet completely. Make sure you take a screenshot or write down the initial values of all the fields before making changes so you can get it back.
To perform this operation, go to Settings, then SIM-Maps and mobile networks. Select your active SIM card and find the Access Point (APN). Create a new access point or edit an existing one by making changes to the protocol fields. Once saved and switched to a new one, the connection speed may change.
βοΈ Checking before change APN
Network type management and preferred mode
One of the most effective ways to reduce Internet speed is to switch the device to an older communication standard.The Redmi 9 smartphone supports modern 4G networks, but a forced transfer to 2G/3G mode is guaranteed to limit the maximum channel bandwidth.
Xiaomiβs standard settings menu often hides the option of choosing only 2G or 3G, leaving the user only a choice between 4G and mixed modes. However, there are ways to circumvent this limitation or use hidden menus. Switching to 2G Only (GSM) mode will reduce the speed to the minimum values sufficient only for text transfer in instant messengers.
If you don't have the right type of network in your Preferred Menu, you can use the code to log into the engineering menu or special applications, but even a standard 3G switch will give you a significant speed limit compared to LTE, which may be exactly what you need to save charge or traffic.
| Type of network | Technology | Max. Speed (theor) | Impact on the battery |
|---|---|---|---|
| 2G (GSM) | GPRS/EDGE | up to 0.2 Mbps | Minimum |
| 3G (UMTS) | HSPA+ | up to 42 Mbps | Average. |
| 4G (LTE) | LTE-A | up to 300 Mbps | High. |
| 5G | NR | up to 10 Gbps | Very high. |
Hidden code for the engineering menu
Application of third-party applications to control the network
When built-in tools are not enough, specialized applications from Google Play come to the rescue. There are utilities that allow you not only to monitor traffic, but also to forcibly break the connection or limit the speed for specific processes. For Xiaomi Redmi 9, such tools can be useful with root rights or even without them.
Firewall applications like NetGuard operate without superuser rights, creating localized firewalls. VPN-It's a traffic filter tunnel, and you can block the Internet completely for the selected applications, which effectively shuts down the speed for them, leaving the rest of the system online. It's a flexible tool for fine-tuning.
There are also programs that mimic poor connectivity, which can artificially delay or restrict bandwidth, which is useful for testing applications in a bad network, but it is worth remembering security and downloading only proven software.
- π‘οΈ NetGuard is a powerful firewall without root rights.
- π GlassWire β Traffic monitoring with blocking capability.
- π NoRoot Firewall β similar connection control functionality.
- βοΈ Termux β for advanced users (working with the command line).
β οΈ Note: Applications that require the creation of VPN-Filtration connections may conflict with others VPN-Only one virtual tunnel can be active at a time.
Resetting network settings as a radical method
In situations where βspeed shutdownβ is required to fix software failures that cause the Internet to malfunction (for example, infinite connection or zero speed at full signal), the effective method is to reset network settings, which will return all parameters of the mobile network and Wi-Fi to factory values.
Resets can be done via Settings menu β Connection and Sharing β Reset Wi-Fi, mobile networks and Bluetooth. It is important to understand that this action will remove saved passwords from Wi-Fi networks and pairs of Bluetooth devices, but will not affect personal files or applications.
After the reboot, the device will re-register on the operatorβs network, receiving the latest APN settings. If the problem with βstickingβ speed or the inability to turn off the Internet was caused by a software conflict, this step should help restore normal controllability of the connection.
π‘
Resetting network settings does not delete personal data (photos, contacts), but requires re-entering passwords from Wi-Fi networks.
Physical methods and flight mode
The easiest and most reliable way to instantly turn off the speed of the Internet is to use a physical switch of the radio modes. On Xiaomi Redmi 9, as on any other smartphone, this is implemented through flight mode or retrieval. SIM-map.
Airplane Mode activates all wireless interfaces, cellular, Wi-Fi and Bluetooth, and speeds drop to zero instantly, and it's a standard feature that doesn't pose any risk to the system. You can activate flight mode and then turn on Wi-Fi separately, leaving the mobile Internet off.
If a long-term restriction is required, a tray can be removed from the SIM-Without a SIM card, the phone will not be able to physically connect to the operator's network, and mobile Internet speed will be zero, which is also useful for checking the operation of the device without being tied to the operator.