You plug your Samsung Galaxy, Google Pixel, or OnePlus phone into your MacBook with a USB cable, launch Google's official Android File Transfer app, and are immediately greeted by the dreaded error dialog: 'Could not connect to device. Try reconnecting or restarting your device.'
You unplug the cable, plug it back in, reboot your phone, reboot your Mac, and get the exact same error. If this sounds painfully familiar, you are not alone: Google hasn't meaningfully updated Android File Transfer for Mac in over a decade, and in 2024, Google quietly removed the download link from the official Android website.
On modern versions of macOS (Ventura, Sonoma, and Sequoia) running on Apple Silicon (M1, M2, M3, M4), Android File Transfer is fundamentally broken due to USB MTP protocol clashes. In this guide, we provide working fixes to revive the legacy app, and introduce modern, wireless alternatives that never require a USB cable.
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Why Android File Transfer Fails on Modern Macs
MTP driver conflicts, background USB locks, and Apple Silicon changes
Android devices do not mount as standard USB mass storage drives. Instead, they communicate over Media Transfer Protocol (MTP), a protocol originally created by Microsoft. Windows supports MTP natively at the kernel level; macOS does not.
To bridge this gap, Google built Android File Transfer as a 32-bit/64-bit user-space utility. However, MTP has a fatal architectural flaw: only one application can communicate with an MTP USB port at any given time. If any background application or sync daemon touches the USB port first, Android File Transfer locks up completely.
Furthermore, modern macOS security permissions and Apple Silicon architecture introduce strict USB connection prompts ('Allow accessory to connect?'). If this prompt is ignored or delayed by two seconds, the MTP handshake fails permanently until the device is re-plugged.
Quick 7-Step Troubleshooting Checklist
Before installing alternative software, run through this quick checklist to resolve simple physical and software blocks:
Unlock Your Android Phone First
Android locks USB data access while the screen is locked with PIN, fingerprint, or password. Unlock the device before plugging in the cable.
Switch USB Configuration to 'File Transfer'
Swipe down your Android notification shade, tap 'Charging this device via USB', and change the setting to 'File Transfer / Android Auto'.
Click 'Allow' on the macOS USB Accessory Prompt
When plugging in on Apple Silicon Macs, look for the macOS system prompt asking 'Allow accessory to connect?' and click Allow.
Use a Data-Capable USB-C Cable
Many cheap charging cables (and some hotel bedside cords) only carry power lines and lack the D+ / D- data pins required for MTP data sync.
Fix 1: The Hidden Samsung / USB Daemon Conflict
Killing background daemons that hijack your Mac's USB ports
The #1 cause of 'Could not connect to device' errors on Mac is background software that silently claims the MTP port. The worst offenders are Samsung Smart Switch, Google Drive Desktop, Preview, and Dropbox.
To check for rogue USB daemons: Open Terminal on your Mac and run:
`launchctl list | grep -E 'smartswitch|android'`
If Samsung Smart Switch is installed, its background daemon runs 24/7. Even if the Smart Switch window is closed, it blocks Android File Transfer from opening. Completely uninstall Smart Switch or kill the background process via Activity Monitor before launching Android File Transfer.
Fix 2: Enabling Developer Options & USB Debugging
Forcing a robust ADB handshake across stubborn connections
Enabling USB Debugging on your Android phone resets the USB controller and forces the device to present its full interface tree to macOS:
1. Open Settings on Android > About phone > tap 'Build number' 7 times until you see 'You are now a developer!'
2. Go back to Settings > System > Developer options > toggle 'USB debugging' to ON.
3. Plug the phone into your Mac. An authorization popup will appear on your Android screen asking 'Allow USB debugging from this computer?'. Check 'Always allow' and tap Allow.
Fix 3: Forcing Android into File Transfer (MTP) Mode
Setting the default USB behavior in Developer Options
By default, Android resets its USB mode to 'Charge Only' every time you unplug the cable. You can override this permanently in Developer Options:
Inside Developer Options, scroll down to the 'Networking' section and locate 'Default USB configuration'. Change it from 'No data transfer' to 'File Transfer'. Now, whenever your phone is connected to any computer, it automatically establishes an MTP data link.
The 3 Best Alternatives (Zero USB Cables Required)
If you are tired of dealing with fragile USB cables and outdated MTP drivers, modern alternatives provide dramatically faster and more reliable transfers:
How to Move Files from Android to Mac in Your Browser
Direct P2P streaming with zero cables and zero app installation
The cleanest replacement for Android File Transfer is ButterShare. You do not need to install an app on your Mac, you do not need an app from the Google Play Store, and you never need to fiddle with USB debugging.
Both devices simply open the browser. When you scan the QR code, the devices link directly over your local Wi-Fi network. You can transfer gigabytes of photos, 4K videos, downloads, and documents straight into your Mac's Downloads folder at maximum Wi-Fi speeds.
Move Gigabytes Instantly with ButterShare
No software setup, no size limit, and zero server storage. Open the transfer page on both devices and start your peer-to-peer transfer in seconds.
Frequently Asked Questions
Verified answers regarding android file transfer mac not working, security, speed, and cross-platform compatibility.
Why did Google discontinue Android File Transfer for Mac?
How do I connect my Android phone to my Mac without a cable?
Why does Android File Transfer say 'Could not connect to device'?
Is OpenMTP safe to use on Mac?
Can I transfer an entire folder from Android to Mac wirelessly?
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