How can I get Noise and Photos to Recognize Android Phones on Freya?
In default the elementary os is not detecting your mobile device and it’s storage. It requires a pack to get your mobile storage mount on Freya.
Also you may see this message on file manager.
If you face such a problems. Just write the following command on terminal
sudo apt install mtpfs
Than it will get you mount your Android phone on Freya.