Hi all,

I hope to get some clarification on customs, as I am a bit confused...

I was recently in Buenos Aires (EZE) , from Amsterdam through Rio de Janeiro and upon arrival I went through border control, picked up my luggage, and went through the X-ray machines before the exit. At no point did anyone ask me to fill out any customs form or wanted to see one. Neither when I left.

Now I'm not sure if I did something wrong?
I'll be flying again soon, and this time with my (work) laptop, a tablet, and two phones. All my personal stuff. Do I have to fill out a form? Or pay any duties (these $300 confuse me especially, as my phone alone is above that)...

Any light shedding is appreciated