Try to dress very simple, non branded clothes, use basics. I was always able to spot the foreign by their very expensive branded clothes. The favourite was always the north face, 8 out 10 always had a north face jacket, lol. Those kind of international brands are impossible to buy for us. If someone uses anything branded like Levis, north face, etc, I immediately assume theyre foreign or rich, can travel, etc.

Use a phone cover that doesnt show the apple on your iPhone, if you have one. A lot of people have iPhones in argentina, but usually only rich people. And you shouldn't even be using your phone on the streets, but if you have to then not blatantly showing you have an iPhone to everyone, will be a lot safer.

Also, dont talk to random people on the street. Just keep walking. Its common people will approach you if they think youre foreign, and white or attractive. A lot are people that are just curious, not thieves, not better safe than sorry. Kind of like dont stick your dick in crazy but having real chances of dying! A lot of adrenaline!

And visit termas de cacheuta in Mendoza, bring meat and food to grill there and have the most awesome day.