Tap the “Build Number” repeatedly, until you see a message informing you that you’re now a developer.
Scroll to the bottom of the screen, until you see your device’s “Build Number.”.
On your Android device, navigate to “Settings -> About phone / About tablet.”.
If Android’s “Settings” application doesn’t contain a “Developer Options” then you’ll need to enable it:
Switch back to OpenMTP, and click the “Refresh” button.
Select “MTP (Media Transfer Protocol).”.
Once the app has installed, launch it, and after a short introduction you should see the main OpenMTP screen, with your macOS file system on one side and a set of instructions on the other. To try this app for yourself, head over to the OpenMTP website and download the latest version. OpenMTP is a free macOS application that makes it possible to transfer multiple files between Android devices and Macs, even if those files are larger than 4GB. While there are workarounds and alternatives available, wouldn’t it be nice if moving files between your smartphone and your laptop didn’t feel like an uphill battle? Here I’ll show you how to setup and use OpenMTP, a free macOS application that aims to take the pain out of transferring files between Apple and Google products. If you own an Android device and a Mac, then you’ll know the pain of trying to transfer files between the two! Although Google has released an official Android File Transfer application for macOS, this application has its limits, including the inability to transfer any files larger than 4GB! Troubleshooting: struggling to make the connection? You should now be connected to your smartphone or tablet and can transfer files between your Mac and your Android device using simple drag and drop.