I think one unique currency is impossible, but one that could be universaly it's pretty acceptable like gold or US dollars. If you go to the center of Paraguay they accept dollars the way you want, even in countries pretty closed (like Cuba) the US dollar is acceptable.

It's all about accept the currency and to understand "simply" the way it goes like people think about dollars... you spend your dollar and just know the first step ahead and that's it; so BTC must be the same as the dollar is.  

There's a company in Brazil which offers to investors a type of "alternative derivative" or something like "Bitcoin 2.0 investment" that gives to the investor a great return...but.... WHAT'S THIS BITCOIN 2.0? They don't even sell the Bitcoin 2.0 neither gives you a true about, because there's no Bitcoin 2.0 or 3.0.... So, I saw lot of people in forums paying to do online courses, webinars, youtube, access to some sort of particular forum and so on. There's also a lot of groups in Facebook i.e chatering (and promoting) things like that. OM PS> ---- I mean like... no fuc*ng way they're telling that XRP is the "next bitcoin"? Even the head of XPR told the absurd this comparison is, etc. And they (company) says: "it will worth 10000000000x more than it's now" like a miracle coin So, what's your opinion about that.

All items are more expensive here than in the local marketplace. For example, the A5 costs 0.0276BTC, even here in Brazil, where the fiat currency sucks it's almost the same price. I mean, it's like 30$ less, but here you pick up one of these in many store around the downtown. The other cellphone are expensive too. Sorry pal.