Copy files from smartphone to device attached to WDTV

Wow, huge conversation I started her. Thanks for all the support. Unfortunatly my phone allready broke and I´m not able to try the advices. I actually tried out the ES File Explorer but only the light version you don´t have to pay for. Under network I couldn´t find my WDTV device. Do you need the full version of this programm to transport files that easily?