How to turn on the modem on Android Xiaomi: step-by-step setting

Modern Xiaomi, Redmi and POCO smartphones are powerful multimedia centers where communication functions play a key role. Often users face the need to quickly access mobile Internet or configure the device as an access point for other gadgets. Turning on an Android modem with a MIUI or HyperOS shell may differ from standard procedures depending on the firmware version and region.

Understanding how to activate network modules correctly not only saves traffic, but also provides a stable connection in low signal conditions. In this article, we will discuss in detail all aspects of working with network settings, starting from basic activation. SIM-maps before creating complex access point configurations, you'll learn what hidden parameters affect data rate.

Many device owners mistakenly believe that it is enough to simply insert a SIM card, but for proper operation in networks. 4G/LTE manual adjustment is often required APN We're going to look at not only the standard methods, but also the ways to solve the typical problems of seeing the network but not accessing the Internet. This is critical for those who use the smartphone as their primary tool for working.

Basic activation SIM-maps and network selection

The first step before enabling any type of modem communication is to have the correct physical and program initialization. SIM-Make sure the card tray is installed correctly and the contacts are not contaminated. Once the device is turned on, the system must automatically identify the operator, but sometimes manual intervention is required.

To start, go to your device's settings menu. Find the Settings section. → SIM-And that's where the basic controls for connectivity are, if you have a dual-sim device, make sure that the card you want is active and the switch is in position. ON.

The important parameter is the choice of network type. In today's environment, it makes no sense to use 2G or 3G if 4G coverage is available. Choose the option Preferred network type and set the value Preferred LTE. This will force the modem to prioritize high-speed towers, ignoring outdated communication standards, which will greatly improve ping and download speeds.

⚠️ Attention: If after the selection LTE badge 4G It does not appear, but only H burns.+ Or E, maybe yours. SIM-The card is too old and does not support standards. 4G. Contact the operator’s salon for a free replacement of the card USIM.

Sometimes it helps to reset the radio interface without completely turning off the phone. You can use flight mode. Turn on Air Mode for 10-15 seconds, and then turn it off. This causes the modem to re-register on the operator's network, often solving problems with "sticking" at low frequencies.

Setting up the Wi-Fi access point (Router Mode)

One of the most popular features of a smartphone is the ability to distribute the Internet. Your Xiaomi can work as a full-fledged Wi-Fi router, broadcasting mobile Internet to laptops, tablets or TVs.

Go to Settings → Wi-Fi Access Point. Here you can specify the network name (SSID) and password. We recommend using WPA2-Personal protection, as it is the most reliable and compatible encryption standard for home and office devices.

• 📶 Frequency Range: Choose 2.4 GHz for better compatibility with older devices or 5.0 GHz for maximum data speeds over short distances.
• 🔒 Never leave your access point open (no password) to avoid traffic theft and malicious attacks.
• 👥 User limit: In the settings, you can limit the number of connected devices, for example, to 4-5, so that the modem doesn't overheat.

There's a useful feature in MIUI and HyperOS called "Access Point Timer," which you can set up to automatically shut down if no one connects to the network within 10 minutes, which saves a lot of battery power, which is very intense in modem modem mode.

⚠️ Warning: When you actively distribute Wi-Fi, your smartphone can get noticeably hot. Do not cover the device with a cloth and try not to keep it down on soft surfaces to avoid overheating of the processor and modem.

Use of the USB-PC modem

When you need maximum connection stability or the speed of the Wi-Fi module of the computer leaves much to be desired, the optimal solution becomes the best solution. USB-This method allows you to transfer Internet traffic from phone to computer via cable, while charging the device.

First, connect your smartphone to a PC or laptop using high-quality cable USB. By default, the phone can go to Charge Only mode. You need to change this behavior. Lower the notification curtain and click on the charging notification by selecting the mode. USB-modem.

If the automatic switching has not occurred, perform the following manually:

1. Go to Settings → Connection and Sharing.
2. Find a point. USB-modem and activate the switch.
3. Wait for the network card drivers to be installed in your computer operating system (usually automatically in Windows 10/11).

Advantage USB-The connection is free of radio interference and lower ping, which is critical for online games or video conferencing, and in this mode, the battery is consumed more slowly than when the Wi-Fi hotspot is running, since the power comes from the computer port.

Configure APN settings for different operators

A common reason why the modem is not running or running slowly is the incorrect access point settings (APN). Although modern Xiaomi smartphones automatically load the settings when installing SIM-cards, sometimes you have to enter them manually, especially when using virtual operators or roaming-simoks.

To verify or modify APN, Go to the Settings path → SIM-maps and mobile networks → (Choose. SIM) → Access points (APN). Here you'll see a list of profiles. If the list is empty or the settings are wrong, create a new access point by clicking on the plus or the New access point button".

Key fields that need to be filled in correctly:

After making changes, be sure to click the menu (three dots in the corner) and select Save, and then activate the created access point by ticking next to it. Without saving, the settings will not apply, and the modem will continue to work with the error.

Hidden engineering menus and signal amplification

For advanced users who want to get the most out of a modem, there are hidden menus of engineering test communication, which allow you to real signal power in dBm and force the phone to switch to a specific frequency (Band) if the base station is overloaded.

To get to the engineering menu, open the Phone app and enter the code ##4636##. If the code is not working (it is blocked on some firmware), you can use the Activity Launcher app from Google Play by finding Testing or Phone Information activity.

In the menu that opens, select Phone Information. Here you will see the Set Preferred Network Type drop-down menu. Experimenting with options (such as LTE Only) can make the phone hold on to 4G even in an uncertain reception zone, where it would normally be reset to 3G. However, beware: in "LTE Only" mode, incoming calls may stop working if VoLTE technology is not configured.

And here you can see the signal strength, and a value closer to 0 (like -85 dBm) means a great signal, and a value below -110 dBm indicates a very poor reception, and if you know these numbers, you can find the best place in your apartment or office to install a modem or phone.

⚠️ Warning: Be very careful with the engineering menu, changing the parameters of the radio module without understanding their purpose can lead to the fact that the phone will not see the network at all, in which case only a complete reset of the network settings will help.

Solving Typical Connection Problems

Even with the right setup, there can be situations when a modem on Xiaomi refuses to work. Consider the most common scenarios and methods for solving them. Often the problem lies not in software conflicts or profile failures.

If the 4G icon is on but the pages aren't loading, try resetting the network settings.This action will remove saved Wi-Fi and Bluetooth pairs passwords, but often resuscitates mobile internet.The way: Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth.

Another reason could be that the traffic limit is exhausted. MIUI has a built-in traffic meter. Check if you have a limit at which the system blocks data transmission. Go to the Security → Traffic app and check the limits settings.

• 🔄 Reboot: A banal but effective measure: Reboot your smartphone to reset network services errors.
• 📡 Balance check: Make sure that there are funds in the account and no lock is connected when the balance is negative.
• 🛠 Software Update: Check for system updates in Settings → About the phone, as patches often contain fixes for modems.

In rare cases, the problem may be hardware — failure of the antenna module or plume, especially if the phone recently fell. SIM-cards in another phone do not help, you may need a diagnosis in the service center.

💡

Use the "Game Acceleration" feature in the Security Center to prioritize the game's network traffic if you use the mobile Internet for gaming, which will reduce ping and reduce the number of lags.

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Proper APN setup and choice of preferred LTE network type solve 90% of the speed and connectivity issues on Xiaomi smartphones.