Android File Transfer continuously fails to copy files to the SD card over USB in Android Lollipop Android File Transfer fails to copy showing the following message:



Another symptom is that the copy is not continuous. It freezes after copying a few megabytes during a couple of seconds.

I also have tried using AirDroid. It transfers data over WiFi instead USB. Google Chrome freezes after a few seconds even turning on "remote transfer" option to "always" in the AirDroid configuration

I also have tried SHAREit changing the path to receive files to the SD Card. It gets stuck without sending anything or giving any feedback.

I have Android Lollipop 5.0.1 on a Samsung Galaxy S4. The only options available are MTP and PTP (camera).

The question is: what is the problem? Why can't I copy the files?
Try using SmartFinder for Android. It's on the App Store and it's free. Make sure you have USB debugging enabled before using SmartFinder though.How to enable USB debugging?Go to your smartphone's Settings -> About device -> Tap on the Build number until you get a message "You are now a developer!"Go back to the main page of Settings ->Developer options -> make sure USB debugging is ticked.Once you connect your phone for the first time, it'll install an app called SmartFinder (about 4 MB) on your phone. It won't have an icon, no need to launch it.Then, simply find the .mp3 file under Music in SmartFinder, select it and tap Import.If that doesn't work, then the file might be corrupt.