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A phone that charges when connected to a tablet is not necessarily making a data connection. A charge-only or faulty cable, an unselected USB mode, a locked-device security setting, or unsupported device-to-device behavior can all explain why file sharing does not work. Start by identifying whether you want to copy files, share internet, or move data during a new-device setup; each uses a different USB function.
First, identify what you want the USB connection to do
- Copy files: This requires a working data connection and compatible behavior on both devices.
- Share mobile internet: USB tethering shares a phone’s internet connection with another phone, tablet, or computer on most Android phones, subject to carrier limits or charges. It is not a way to browse or copy the phone’s files on the tablet. Google’s tethering guidance describes internet sharing.
- Transfer data while setting up a new Android device: Android setup may offer cable or wireless transfer depending on device support and conditions. That setup process is not the same as connecting two devices for everyday file browsing. Google’s Android setup instructions explain the setup transfer flow.
Google’s standard USB file-copy instructions describe transferring between an Android device and a Windows computer or Chromebook, not a universal phone-to-tablet workflow. Whether a particular phone and tablet can exchange files directly over USB depends on their models, Android versions, ports, and supported connection modes. Check both manufacturers’ guidance for the exact devices before assuming that a cable or adapter will enable it. Google’s file-transfer instructions
Check the cable, ports, and USB mode
1. Use a cable that carries data
Some USB cables charge but cannot transfer files. Google states, “Not all USB cables can transfer files.” Try a cable explicitly rated for data transfer, and confirm that its connectors fit the ports on both devices. Charging alone does not prove that the cable or connection supports data.
2. Unlock the phone and select File transfer
For Google’s documented Android-to-computer or Chromebook workflow, unlock the Android device after connecting it. Tap the notification labeled “Charging this device via USB,” then choose “File transfer” under “Use USB for.” The labels can differ by manufacturer and Android version. These steps are documented for a computer or Chromebook and do not guarantee that a tablet will show or browse the phone’s files.
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3. Treat an adapter as a fit solution, not a compatibility fix
If the cable’s plug does not match a device’s port, an appropriate adapter may solve that physical mismatch. Google mentions an adapter in the context of transferring data during Android device setup. An adapter cannot add a data mode that the phone or tablet does not support, so connector fit alone does not establish direct phone-to-tablet compatibility.
Isolate whether the cable, port, or device is the problem
- Try a second cable known to support data transfer.
- Test the phone’s port by connecting it to a Windows computer or Chromebook using Google’s file-transfer steps.
- Where possible, test the other device’s USB port with another USB device.
- If using a Windows computer, check that new hardware detection is enabled. Restart the devices and install available Android updates before trying again.
If the phone transfers files to a computer but not to the tablet, that confirms a data connection with the computer, not compatibility with the tablet. The tablet’s supported USB role and transfer options still need to be checked against its manufacturer’s instructions.
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Check USB Protection on supported Pixel phones
On supported Pixel 6 and later devices, USB Protection associated with Advanced Protection can block a new USB data connection while the screen is locked, even when charging continues. If this feature is enabled, unlock the phone and retry. This is a device-specific possibility, not a general explanation for every Android phone. See Google’s USB threat protection guidance.
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If the devices do not support the direct connection you need, use a transfer route supported by both models. Google’s file-transfer guidance points to account-based file movement, and its Android setup flow may offer a cable or wireless option when setting up a new device. The available options depend on the devices and the task; a new-device setup transfer may not provide ad hoc file browsing between an existing phone and tablet.
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If you need to replace a suspected charge-only or faulty cable, look for a USB-C data transfer cable only after confirming the connector types and data support needed by both devices. A replacement cable may resolve a cable problem, but it does not guarantee that the phone and tablet support direct file transfer. For an exact compatibility answer, provide both model names, Android versions, connector types, and what happens when they are connected, then consult the manufacturers’ guidance.
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