How to share Wi-Fi from your computer to your phone via USB cable

Many people are familiar with situations where mobile internet is unstable and the smartphone's hotspot drains the battery in a matter of hours. In such cases, a logical question arises: can you use a computer's wired connection to access the mobile device's network? The answer is yes, and this process is called reverse tethering.

Unlike the standard distribution, where the phone acts as a modem, here The PC becomes a gateway for data transfer. This not only saves mobile data but also significantly speeds up page loading if your computer uses a fiber-optic connection or a stable corporate Ethernet connection.

However, this feature is often not supported by standard Android system tools, requiring specialized software or superuser rights. In this article, we'll take a detailed look at How to connect to Wi-Fi from a computer to a phone via a cable, using official developer tools and third-party utilities.

Preparation of equipment and software

Before setting up data transfer, you need to make sure you have the right equipment. You'll need a working USB cable that can transfer data, not just charge the battery. Cheap cables included with power banks often lack the necessary internal contacts for signal transmission.

Also on a computer running Windows The latest drivers for your smartphone must be installed. They are usually downloaded automatically upon first connection, but for stable operation of ADB (Android Debug Bridge), it's best to install the official package. Google USB Driver or drivers from the device manufacturer (Samsung, Xiaomi, Huawei).

On the phone itself, you will need to activate hidden debugging mode. To do this, go to Settings → About phone and quickly tap "Build number" seven times. After this, the "USB debugging" toggle will become available in the "Developer options" menu.

• 📱 A smartphone with Android OS version 4.0 or higher (preferably with root rights for full functionality).
• 💻 A computer with Windows 7, 10, or 11 operating system and internet access.
• 🔌 USB cable with working data transfer contacts (Micro-USB or Type-C).
• 🔧 Android SDK Platform Tools package installed.

⚠️ Important: When connecting your phone to a new computer in debug mode, a prompt to confirm the RSA key will appear on the mobile device's screen. Be sure to click "Allow," otherwise the computer will not be able to send commands to the device.

It's worth noting that modern versions of Android (starting with 10) have built-in security restrictions that can block unauthorized access to network interfaces. Therefore, using proven utilities such as Gnirehtet, is the most secure method that does not require superuser rights.

Reverse Tethering without Root Rights (Gnirehtet)

The most universal and secure way to organize the transfer of the Internet from a PC to a phone is to use a utility GnirehtetThis name is pronounced "Tethering" backwards. The program operates at the operating system kernel level, creating a virtual network interface that redirects traffic through the USB port.

The main advantage of this method is that there is no need to modify system files or obtain root privileges. Gnirehtet Creates a local VPN tunnel on the device through which all network traffic passes. This means that apps "think" they're using a mobile connection, even though the data is actually traveling through a cable.

To start the process, download the program archive from the developer's official repository. Unzip the files to a separate folder on your computer. Connect your smartphone with a cable and ensure USB debugging is enabled in the Developer Options menu. Run the executable file. gnirehtet-run.cmd (for Windows) or the appropriate script for your OS.

After running the script, a system window will appear on your phone's screen asking if you want to create a VPN connection. Click "OK." From this point on, all internet traffic on your phone will go through your computer. If you disconnect the cable, the connection will be lost, as the physical connection will be lost.

Using SuperUser rights and the net share command

For users with rights SuperUser (Root), the setup process is different and provides deeper control over network interfaces. In this case, you can use the built-in capabilities of the Android Linux kernel to forward network packets without creating a VPN tunnel.

There are specialized apps, such as "Reverse Tethering No Root" (also works with root) or "WiFi Tethering," that automate this process. However, for experts, the manual method via the ADB console is more appealing. It allows for flexible configuration of DNS servers and routing.

You'll need to enter a series of commands in the terminal on your computer. First, you'll need to access the device's shell, then change the network settings. The command adb shell opens the phone terminal, and then through su Superuser rights are requested.

adb shell
su
service call connectivity 33 i32 1 i32 1

The above command is an example and may vary depending on your Android version and firmware. A more reliable method for rooted users is to use a script. usb0 or similar ones that reassign the USB interface to the mode RNDIS with data transfer, not just synchronization.

⚠️ Warning: Making changes to system network files (hosts files, iptables configurations) without a backup may result in complete loss of internet access even after a reset. Always make a backup before experimenting.

What to do if the su command fails?

If you get access denied when entering the su command, it means your device doesn't have root privileges or they were lost after a system update. In this case, use the Gnirehtet method, which doesn't require superuser privileges.

Setting up a network in Windows for data transfer

For a computer to share the internet, its network settings must be properly configured. In Windows 10 and 11, this is done through the Network Connections control panel. You need to find an active internet connection (Ethernet or Wi-Fi) that connects the PC to the global network.

Right-click the active connection and select "Properties." Go to the "Sharing" tab. Here, check the box next to "Allow other network users to connect through this computer's Internet connection."

In the Home Network Connection drop-down list, select the virtual adapter created by the Android driver (usually called Remote NDIS based Internet Sharing Device (or contains the word "USB"). This will create a bridge between the outside world and the USB port.

After applying the settings, you may need to reconnect the cable. The system should automatically assign the phone an IP address from the gateway range (e.g., 192.168.137.x). If this doesn't happen, try resetting the TCP/IP settings with the command netsh int ip reset in the command line with administrator rights.

Troubleshooting driver and connection issues

A common issue when setting up reverse tethering is incorrect driver functionality. The computer may only see the phone as a storage device or charging device, ignoring network protocols. In Device Manager, this appears as an "Unknown Device" or a device with a yellow exclamation point.

To fix this, you need to manually update the driver. In Device Manager, find your phone (often under "Portable Devices" or "Other Devices"). Right-click it and select "Update Driver" → "Browse my computer for driver software" → "Let me pick from a list of available drivers."

Select from the list of manufacturers Microsoft, and in the list of models - USB RNDIS Adapter or Remote NDIS based Internet Sharing DeviceThis will force Windows to treat the USB connection as a network card, which is necessary for transmitting Internet traffic.

• 🔄 Restart your computer after installing the drivers for the changes to take effect.
• 🔌 Try using a different USB port, preferably USB 2.0, as some older drivers work better with it.
• 📱 On your phone, in the Developer Options menu, change the USB configuration mode to "RNDIS (USB Ethernet)".

If automatic search doesn't help, download a universal driver WinUSB Or a specific driver for your processor (Qualcomm, MediaTek, Samsung). Installing the correct driver is 90% of the success in setting up wired internet.

Alternative methods and third-party utilities

Besides Gnirehtet, there are other tools for solving this problem. For example, the application Reverse Tethering No Root (requires installing an APK on your phone and a PC client) offers a graphical interface, making it more user-friendly. It automatically configures the necessary DNS and proxy settings.

Another option is to use Android emulators on PC (Bluestacks, Nox), which have built-in network syncing mechanisms, but this is only relevant if you're working within the emulator and not with a physical device. For physical devices, you can also try manufacturer-provided utilities, such as Samsung Flow or Xiaomi MI PC Suite, although they are more often focused on file transfer.

For advanced users familiar with Linux, a great option is to use adb in conjunction with port forwarding Team adb reverse allows you to forward ports from your device to your computer, but full internet access requires more complex configuration iptables.

⚠️ Note: Interfaces and menu item names may vary depending on the manufacturer's operating system (MIUI, OneUI, ColorOS). If you can't find the item, search for it in your phone's settings.

Questions and Answers (FAQ)

Why does the phone see the cable, but the Internet doesn’t appear?

Most likely, RNDIS mode isn't enabled or sharing isn't configured in Windows. Check if the Ethernet/USB icon is lit in your phone's status bar. Also, make sure "Allow access" is checked in the connection properties on your PC.

Does this method affect the charging speed of the phone?

Yes, when actively using the internet via USB, the phone may charge more slowly or even discharge, as the processor and radio module consume power. However, when idle, the battery will charge, albeit more slowly than when connected to a regular charger.

Is it possible to share Wi-Fi from a laptop to a phone without a cable?

Yes, if your laptop has a Wi-Fi module that supports access point (Hosted Network) mode. However, the speed via a USB 3.0 cable will always be higher and more stable than via a wireless connection, and the latency (ping) will be lower.

Is Gnirehtet safe to use on public networks?

Using Gnirehtet on public networks (cafes, airports) is even safer than a direct connection, as all traffic first passes through your computer, where it can be protected by antivirus and firewall software, before reaching your phone.

Does this method work on iPhone (iOS)?

No, the methods described are intended for Android. iOS has a closed file system, and reverse tethering cannot be implemented using standard tools (without jailbreaking and complex iTunes manipulations). Apple only allows internet tethering by default. With phone on PC.