Xiaomi Redmi Note 9 series smartphones are deservedly popular due to their excellent price-performance ratio, but when working with SIM cards of regional operators such as Phoenix, users may face the need for manual configuration. Often the device automatically picks up basic network parameters, but for stable operation of 4G LTE and multimedia services, more accurate registration of access points is required. Without proper APN settings, data transfer speeds can be limited, and some applications may refuse to work in the background.
The setup process does not require a deep technical knowledge, but it is important to follow the sequence of actions carefully, since the MIUI shell interface has its own navigation features. In this article, we will discuss in detail how to enter parameters correctly for the Phoenix operator, check the modem settings and fix typical connection errors. The correct configuration will ensure you maximum page load speed and stable connection in areas of confident reception.
Preparation of SIM card and slots of the device
Before you start the software setting, you need to make sure that the SIM card is physically healthy and correctly installed in the tray of your Redmi Note 9. The device supports the operation of two SIM cards, but for the Internet test, it is recommended to use only one active communication module to eliminate conflicts of data transmission priorities.
It is also worth checking the status of the service on the operator's side by calling the support service or using your personal account if you have access to Wi-Fi. Sometimes the problem of lack of Internet is not in the phone settings, but in a blocked tariff plan or lack of funds on your balance. Make sure that the mobile Internet service is activated for your number.
- 📱 Remove the tray with a paper clip and wipe the SIM card contacts with a soft cloth.
- 🔌 Insert the Phoenix card into slot 1, which often takes priority for data transfers.
- 📶 Make sure that the operator’s network indicators appear in the top corner of the screen.
After turning on the phone, wait for the system to fully boot and network icons to appear. If the SIM card is detected but the Internet is not working, move to the next section to create a profile of the access point.
Creating a new APN access point
The main stage of setting up is to enter the correct settings in the menu of mobile networks. → SIM-Maps and mobile networks. Select the Phoenix SIM card and find the Access Point (APN). In the list that opens, click the “New Access Point” button or «+» top-right corner of the screen.
The menu that opens has to fill in a few fields. The name can be anything, like "Phoenix Internet" so you can easily identify the profile. The "APN" field is critical, because that's where the operator's gateway address is written. The most common value for Phoenix in Crimea and Sevastopol is Internet or mobile.fenix, depending on the type of SIM card and the year of issue.
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If the Internet does not appear after entering the settings, try changing the APN type to "default,supl" in the additional settings of the point.
The remaining fields, such as a proxy server or port, are usually left blank unless the operator has provided specific instructions. The APN protocol type is recommended to set to IPv4/IPv6 for maximum compatibility with modern networks. After filling in all fields, be sure to click the menu (three dots) and select Save, otherwise the entered data will be lost on the exit.
Configure modem parameters and network type
Once you have created the access point, you need to make sure that the smartphone is using the correct type of network. → SIM-maps and mobile networks → Preferred network type Select mode Preferred LTE. This will allow the device to automatically switch between 3G and 4G, providing the best coverage.
Sometimes Xiaomi smartphones have a hidden engineering menu that allows you to fine-tune the radio module. To access it, you can use the code ##4636## in the Phone application. In the Phone Information section, you can force the preferred network to be installed, but you should do this with caution so as not to disrupt the communication module.
| Parameter | Meaning for Phoenix. | Description |
|---|---|---|
| Name (Name) | Phoenix | Arbitrary profile name |
| Access Point (APN) | internet | Main gateway of the operator |
| Protocol | IPv4/IPv6 | Standard for data transmission |
| Type of authentication | No or PAP | Authentication method |
Choosing the right network type directly affects server response speed and video call stability. If your Phoenix Towers are predominantly 3G in your area, forcing only 4G to be turned on can cause signal loss, so Preferably is optimal.
Resetting network settings and restarting
Making changes to network configuration system files often requires rebooting the device to take effect. Simply turning off the screen is not enough - you need to perform a full cycle of rebooting the Redmi Note 9. This will clear the cache of network services and force the modem to re-register in the operator's network with the new APN parameters.
If the internet doesn't work after the reboot, you can try a more radical method, resetting your network settings. This operation will bring all the parameters of Wi-Fi, Bluetooth and mobile networks back to factory values, but it will not affect your personal files, photos or contacts. You can find this option by using the Settings path → Connection and Sharing → Reset Wi-Fi, cellular networks and Bluetooth.
⚠️ Attention: Resetting network settings will remove all saved passwords from Wi-Fi routers and Bluetooth device codes.
Once the reset is done, the system will suggest reconfiguring the SIM cards, select the Phoenix operator as the primary data transfer and check the Internet, which in most cases eliminates software conflicts that arose after the MIUI update.
Checking traffic limits and energy savings
MIUI shell is known for its aggressive power saving system, which can block background data transmission to save battery power. Go to the Security app → Traffic → Settings and make sure that there are no restrictions on system processes and the browser. Also check if Traffic Savings mode is enabled, which compresses data and may disrupt some sites.
In addition, in the SIM card settings, there may be a limit of mobile traffic, when the phone reaches it, automatically turns off the Internet. → SIM-maps and mobile networks → Traffic Limit: If the slider is activated, set a reasonable limit or turn off the function altogether so that it does not block the prematurely connection.
☑️ Diagnostics of connection
It is also important to make sure that the date and time settings are set to automatic mode. Incorrect time on the device can lead to errors in security certificates, which will cause browsers to write about a connection error, even if the network is physically active.
Solving Frequent 4G Connectivity Issues
One of the common issues with the Xiaomi Redmi Note 9 is when the phone “sees” the network. 4G, But it's not being transmitted, and it's often due to frequency incompatibility or the wrong access point. → SIM-maps and mobile networks → Operator networks by disabling automatic selection.
If the phone switches to 3G (H+) and doesn’t want to take 4G, check if your SIM card supports USIM. Older Mini-SIM SIM cards may not work properly in modern slots without adapters, and older chips simply can’t work on LTE networks.
What to do if the APN is not saved?
In rare cases, the problem may be in the firmware. If you are using custom MIUI build or global version on a Chinese device, the necessary drivers for the frequencies used by Phoenix in your region may not be available, in which case it is recommended to return to stock firmware.
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The key factor of a stable Internet is not only the right access point, but also the relevance of the software shell of the smartphone.