Confusing how to transfer file from your android device? Connecting it to computer based on KDE desktop but it doesn't appear? Try using MTP protocol :D
- sudo apt-add-repository ppa:philschmidt/ppa-kio-mtp-daily
- sudo apt-get update
- sudo apt-get install kio-mtp
Note: You can't make a folder in your Android devices. So you must make a folder first from your android, and then copy the file you want to it.
Tested on Kubuntu 12.04 and 12.10 with Nexus 7 device. In Kubuntu 13.04 there is an issue that MTP will be added in dolphin, so you are not necessary to install kio-mtp again :D