Your Android phone is connected to a USB-C hub and appears to be charging normally. You enable USB tethering, but your Windows laptop still cannot access the internet through the phone.
Why does charging work while USB internet sharing fails?
Android USB tethering requires more than a charging connection. The phone must establish a USB data connection, enable internet sharing, and expose a compatible network interface that Windows can recognize. On many Android-to-Windows connections, this involves RNDIS (Remote Network Driver Interface Specification).
If tethering works when your phone connects directly to the laptop but fails through a hub, the USB connection path deserves further investigation.
1. Start With the Phone's Tethering Settings
Before checking Windows drivers, make sure the phone is actually sharing its mobile internet connection.
On many Android phones, the general steps are:
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Open Settings.
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Go to Network & Internet or Connections.
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Select Hotspot & Tethering or Mobile Hotspot and Tethering.
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Connect your phone to the laptop through a USB data connection.
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Enable USB Tethering.
Menu names vary by manufacturer and Android version.
Also check that:
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Mobile data is enabled.
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Your phone has an active cellular connection.
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Your carrier plan supports USB tethering.
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Any confirmation prompt on the phone has been accepted.
If the USB Tethering option is unavailable or grayed out, check whether the phone detects the USB connection first.
Samsung's official guide to enabling USB tethering on Android explains that USB tethering requires a connected USB cable and an enabled sharing setting.
2. Make Sure the USB Data Connection Is Established
A phone can charge through a USB-C hub without establishing the data connection needed for tethering.
Check the physical connection carefully.
Your setup should look like this:
Android Phone → USB Data Cable → Hub USB Data Port → Laptop
Pay attention to three things:
Use a data-capable cable. Some USB cables support charging but not data transfer. Try the original phone cable or another cable confirmed to support USB data.
Choose the correct hub port. Connect the phone to a USB-A or USB-C data port, not a charging-only PD input.
Check the phone's USB notification. Some Android devices display USB connection options when connected. The available modes vary by manufacturer. Select the appropriate USB tethering option in the phone's network-sharing settings rather than assuming that File Transfer mode enables internet sharing.
If the phone charges but the laptop does not recognize any USB function, our guide to Android phone USB file transfer problems through a hub explains how to distinguish charging, USB data, and cable compatibility issues.
3. Find the USB Network Adapter in Windows
Once USB tethering is enabled, Windows should detect a network interface provided by the phone.
On many Android devices, this appears as an RNDIS network adapter.
To check:
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Right-click the Windows Start button.
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Open Device Manager.
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Expand Network adapters.
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Look for an entry such as Remote NDIS Compatible Device, USB Ethernet/RNDIS Gadget, or another manufacturer-specific USB network adapter.
The exact name depends on the phone and its USB networking implementation.
What the results mean:
| Windows Result | What to Check |
|---|---|
| RNDIS or another USB network adapter appears normally | Continue to IP and internet checks |
| Unknown USB device appears | Check USB recognition and driver compatibility |
| Device has a yellow warning icon | Investigate the device driver |
| No new network adapter appears | Check phone tethering settings, cable, and hub data connection |
Microsoft explains in its RNDIS documentation that Windows includes support for USB-based Remote NDIS network devices.
If the phone is detected but Windows reports a driver problem, check Windows Update and the phone manufacturer's supported driver instructions. Do not force an unrelated driver onto an unknown device.
4. When Windows Detects RNDIS but Internet Still Doesn't Work
Seeing a USB network adapter in Device Manager does not necessarily mean internet sharing is working.
The next step is to check the network configuration.
Open Command Prompt and run:
ipconfig /allFind the USB network adapter and check its IPv4 address, DHCP status, and default gateway.
Then investigate:
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Whether the adapter received a valid IP configuration.
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Whether the phone still has an active mobile data connection.
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Whether the carrier permits tethering on your current plan.
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Whether a VPN, proxy, or security application affects the connection.
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Whether the phone's mobile network or APN settings are configured correctly.
If the adapter appears but has no valid network configuration, first toggle USB tethering off and on, then reconnect the phone.
Avoid changing APN settings or manually assigning IP addresses unless your carrier or device manufacturer specifically recommends it.
If the network adapter is missing entirely, repeatedly renewing the IP address will not solve the problem. Windows must first recognize the USB network interface.
5. Compare Direct Connection With Hub Connection
This is the most useful test for determining whether the USB-C hub contributes to the problem.
Try both setups using the same phone and a known data-capable cable.
Direct Connection
Android Phone → USB Cable → Laptop
Hub Connection
Android Phone → USB Data Port → USB-C Hub → Laptop
Compare the results:
| Test Result | Likely Area to Investigate |
|---|---|
| Both connections work | Tethering is functioning normally |
| Direct works, hub fails | Hub port, cable, or connection compatibility |
| Both fail and no network adapter appears | Phone settings, cable, or USB recognition |
| Network adapter appears in both, but neither has internet | Mobile data, carrier restrictions, or network configuration |
| Connection repeatedly disappears through the hub | Cable stability, port connection, or power conditions |
If the phone works directly but not through the hub, try another USB data port and disconnect unnecessary peripherals during testing.
Also remember that Android USB tethering and ADB debugging are different functions. A phone can provide a working network connection without enabling USB debugging. For debugging authorization issues, see our guide to Android USB debugging authorization problems.
6. Choosing a USB-C Hub for Android Tethering
If you regularly connect an Android phone, laptop, and other USB peripherals, choose a hub with clearly identified USB data ports.
For users who need several USB-A connections, a USB-C hub with three USB 3.0 data ports provides additional ports for compatible phones, keyboards, flash drives, and other accessories.
If you also use USB-C accessories, a USB-C hub with USB-A and USB-C data ports offers two USB 3.0 ports and a separate USB-C data port supporting up to 5Gbps, alongside HDMI and card-reader connectivity.
These configurations can make it easier to connect multiple devices through one laptop connection.
However, a hub only provides the physical USB connection. It cannot enable USB tethering on an unsupported phone, remove carrier restrictions, or guarantee RNDIS compatibility.
Before purchasing, confirm that the phone supports USB tethering and that the hub's selected port supports USB data.
FAQ
Why does my Android phone charge but USB tethering doesn't work?
Charging only confirms that power is reaching the phone. USB tethering also requires a working data connection, enabled tethering settings, and a compatible network interface on the computer.
Why is RNDIS missing from Windows Device Manager?
The phone may not have enabled USB tethering, the USB data connection may not be established, or the device may use a different USB networking implementation. Check the phone settings and connection before changing drivers.
Does Android USB tethering require MTP File Transfer mode?
No. MTP is used for file transfers, while USB tethering establishes a network connection. Selecting File Transfer does not replace enabling USB Tethering.
Can a USB-C hub prevent Android USB tethering?
It can contribute to connection problems if the wrong port or an incompatible connection path is used. Compare direct and hub connections to identify whether the hub is involved.
Why does USB tethering work directly but not through a hub?
The hub connection may involve a charging-only port, incompatible cable, unstable USB connection, or device compatibility limitation. Test another data port and simplify the setup.
Final Recommendation
If Android USB tethering is not working through a USB-C hub, follow the connection path rather than immediately replacing hardware:
Phone Settings → USB Data Connection → Hub Data Port → Windows Network Adapter → Internet Access
First confirm that USB tethering is enabled. Then verify that Windows recognizes the phone's network interface and receives a valid network configuration.
If direct connection works but hub connection fails, investigate the USB data port, cable, and hub compatibility.
The key takeaway is simple: charging, file transfer, ADB debugging, and USB tethering are different USB functions. A successful charging or file-transfer connection does not automatically guarantee a working network-sharing connection.
