Determining the exact model of the wireless adapter inside the tablet often becomes a critical task for owners of devices running AndroidThis is necessary not only for replacing a faulty component, but also for finding up-to-date drivers, firmware, or diagnosing connection stability issues. Unlike on personal computers, where information is available through the task manager, on mobile devices, manufacturers often hide this data from the user.
There are several proven ways to find out what kind of chip it is. Wi-Fi installed on your gadget, starting from the use of specialized software and ending with the analysis of system logs. The most accurate result is achieved by combining software methods and physical inspection of the board in the event of complete device failure. We'll cover all available options, from simple applications to advanced debugging techniques.
In some cases, especially on budget models from Chinese brands, software information may be hidden or modified. Therefore, it's important to understand that searching for this information may take some time and require the successive use of various tools. Let's look at how to access this information without opening the case, if possible.
Using specialized applications
The easiest and safest way for the average user is to install third-party utilities from Google PlayThese programs can read system data and display it in an understandable format. One of the most popular and informative tools is the application AIDA64It provides comprehensive information about the hardware, including the processor model, sensors, and network interfaces.
After installing and launching the app, go to the "Network" section. This displays the current connection, as well as the name of the adapter being used. However, keep in mind that on some Android versions with heavily customized interfaces, the app may only see the virtual driver name, not the actual chip model.
Another powerful tool is CPU-ZAlthough its primary focus is the processor, the "System" and "Devices" tabs often contain data about network controllers. If standard methods fail, try the app Device Info HW, which specializes in identifying components in devices without official documentation.
β οΈ Note: Scanner apps may show a generic driver name (e.g., "Generic Wi-Fi") rather than the specific chip model (e.g., "RTL8723BS"). This is an operating system limitation, not a software bug.
To obtain more detailed information, sometimes it is necessary to have Root rightsWithout superuser rights, access to system configuration files may be limited. If your device is rooted, diagnostic capabilities are significantly expanded, allowing you to read data directly from the system kernel.
Search through the engineering menu and system settings
Many tablets, especially those based on processors MediaTek And Spreadtrum, have a hidden engineering menu. It is accessed by entering a special code in the "Phone" or "Dialer" app. For devices MTK a combination often works ##3646633##, which opens the menu Engineer Mode.
In the interface that opens, go to the "Connectivity" or "CDS Information" tab. Here you'll find the "Wi-Fi" section, which displays the module's technical parameters, including the firmware version and sometimes the chip model. This method doesn't require installing any additional software, but the interface may be entirely in English or Chinese.
It's also worth checking your Android's default settings. Go to Settings β About phone (or About device) β General informationBy repeatedly tapping "Build number," you can activate developer mode. The "Developer options" menu that appears sometimes contains a Wi-Fi error log that mentions the module name.
What to do if the codes don't work?
On many modern tablets, manufacturers block access to the engineering menu via USSD codes. In this case, try downloading the "MTK Engineering Mode" app from the Play Market, which can unlock hidden functions without codes.
Diagnostics via ADB and command line
For advanced users, the most accurate method is to use a debug bridge. Android Debug Bridge (ADB)This tool allows you to send commands directly to the tablet's operating system from your computer. You'll need to connect the device via USB, having first enabled "USB debugging" in the developer menu.
Once connected, open the command prompt on your PC and enter the command adb shellIf the connection is successful, you will gain access to the device shell. To find information about the Wi-Fi module, enter the command lsmod or dmesg | grep -i wifiThese commands will list loaded kernel modules and system messages, which often include the chip name.
Another useful query is - cat /proc/version or viewing files in a directory /sys/class/net/. Often in the boot logs (dmesg) you can find lines indicating the chip vendor, for example, "Realtek", "Broadcom" or "Espressif".
adb shell dmesg | grep -E"wifi|wlan|firmware"This method requires minimal command line knowledge, but produces the most accurate results, as the data is taken directly from the Linux kernel, which Android is based on.
βοΈ Getting Started with ADB
Analysis of technical documentation and FCC ID
If software methods don't work, you can refer to official documentation. An identification code is often found on the back of the tablet or in the "About Device" menu. FCC IDThis is a unique identifier assigned to devices certified in the United States.
By entering this code on the FCC's official website (fcc.io), you'll find device test reports. The section with photos of the internal components or the radio module description usually lists the exact Wi-Fi chip model used by the manufacturer. This is a completely reliable source of information.
It's also worth looking for specifications on the manufacturer's website or on resources like 4PDA And XDA DevelopersIn discussion threads about specific tablet models, users often share the results of their disassemblies and identify the installed hardware.
| Search method | Complexity | Accuracy | The Need for Root |
|---|---|---|---|
| Applications (AIDA64) | Low | Average | No |
| Engineering menu | Average | High | No |
| ADB Commands | High | Very high | No (preferred) |
| Disassembling the case | Very high | 100% | Not required |
Physical inspection of the board (for advanced users)
If the tablet won't turn on or the Wi-Fi module isn't detected at all, a physical inspection is the only option. To do this, carefully open the device's case, removing all screws and disconnecting the cables. Be careful, as this may void the warranty.
The Wi-Fi module is usually a small black or metallic plate soldered to the main board or connected via a connector. Mini PCIe or M.2 (in large tablets). The chip's surface is always marked with the manufacturer's name and model.
Often, the module is covered by a metal shield. In this case, you'll need to carefully remove the shield or look for markings on the edge. Popular chip manufacturers: Realtek, MediaTek, Broadcom, Qualcomm AtherosKnowing the markings, you can find the datasheet and the necessary firmware.
β οΈ Caution: Opening the tablet case requires special tools (suction cups, picks, hair dryer) and skill. Careless handling may damage the battery or display cable.
Compatibility and driver issues
Finding a module is often necessary for installing custom firmware (Custom ROM). If the new firmware doesn't include a driver for your specific Wi-Fi chip, the wireless network won't work. In such cases, search forums for the driver source code or a ready-made module. .ko (kernel object).
It's important to understand that Android drivers are highly dependent on the kernel version. A driver that works on Android 9 may not run on Android 11. Therefore, when searching for solutions, always specify not only the tablet model but also the Android version.
If you're planning to replace the module, make sure the new chip is physically compatible in pinout and is software-supported by your tablet's processor. There are virtually no universal solutions here.
Is it possible to update the Wi-Fi driver on a tablet without flashing the firmware?
In most cases, no. Android drivers are built into the system kernel. They can't be updated separately, as is the case with Windows. A new firmware (ROM) version is required, which already includes the required driver.
Why does AIDA64 show "Unknown Device"?
This means the operating system cannot correctly query the device or the correct driver is missing. This can also happen if the Wi-Fi module is physically faulty or the connection has become loose.
Does the Wi-Fi module model affect internet speed?
Yes, directly. Older modules can only support the 802.11n standard (up to 150 Mbps), while modern chips support 802.11ac (Wi-Fi 5) and 802.11ax (Wi-Fi 6), delivering gigabit speeds.