How to Check Xiaomi Phone Hardware Diagnostics Using Built-In Tools

A Xiaomi phone not recognized by PC is usually fixed by enabling the correct USB mode, reauthorizing USB debugging, and reinstalling the phone driver. If ADB shows no device found, the usual cause is missing authorization, a charge-only connection, a bad cable, or Windows using the wrong USB driver.

Steps

Unlock the Xiaomi phone and reconnect the cable.

Use a data-capable USB cable and connect directly to a PC USB port. Avoid USB hubs, front-panel ports, and damaged cables.
Set the USB connection to file transfer.

Open the USB notification on the Xiaomi phone and select File Transfer (MTP). A charge-only mode often causes Xiaomi not recognized by PC errors.
Enable Developer options and USB debugging.

Go to Settings > About phone and tap MIUI version several times. Then open Additional settings > Developer options and enable USB debugging.
Revoke old USB debugging authorizations and reconnect.

In Developer options, tap Revoke USB debugging authorizations. Reconnect the phone, accept the RSA prompt, and run the ADB command again if ADB no device found still appears.
Update or reinstall the Xiaomi/ADB driver on the PC.

Open Device Manager, remove unknown Android entries if needed, then reinstall the proper ADB or MTP driver. Restart the PC after driver changes.

Common Issues and Fixes

Issue	Likely Cause	Fix
Phone charges only, but no files appear	USB mode is set to charging	Change USB mode to File Transfer (MTP) after unlocking the screen.
ADB no device found	USB debugging is off or RSA authorization was not accepted	Enable debugging, revoke old authorizations, reconnect, and approve the prompt.
Device appears as unknown in Device Manager	Missing or broken Windows driver	Uninstall the unknown device and install the correct Android ADB/MTP driver.
Connection works on one PC but not another	Local driver conflict or blocked USB port	Test another rear USB port, restart the PC, and reinstall drivers.
No debugging prompt appears	Cable supports charging only or the phone is locked	Switch cables, unlock the phone, and reconnect.

Quick Tips

MIUI security settings: MIUI security settings may block debugging until the phone is unlocked and the permission dialog is confirmed.
USB options may vary: Some Xiaomi models show different USB options depending on region, MIUI version, or HyperOS build.
Background driver conflict: ADB commands may fail if another phone management tool is already using the Android driver in the background.
Fastboot is different from ADB: Fastboot mode is not the same as normal ADB mode. A device can be detected in fastboot but still fail in ADB.

🤔Note:

If Xiaomi is not recognized by your PC, the most common fixes are switching the USB mode from charging to File Transfer (MTP), unlocking the phone before connecting, and reauthorizing USB debugging when the RSA prompt appears.

Why does Xiaomi USB debugging not work after enabling it?

USB debugging may remain inactive if the RSA authorization prompt was missed, the phone stayed locked, or the cable only supports charging. Revoke authorizations and reconnect with the screen unlocked.

Why is Xiaomi detected for charging but not for file transfer?

The most common reason is MTP not being selected. Driver conflicts on Windows can also block file access even when charging still works.

💡Protip:

If the connection becomes unstable during backup or file export, a phone manager such as Dr.Fone can help handle media transfer and device management after the USB connection is recognized properly.

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