In order to get the portuguese ID did you have to buy real estate?
Can you use the portuguese ID to open bank accounts just in portugal or all over the world?
A Portugese ID is about as good as non-passport documents get.
With a Portugese ID and PoA, you can open in all EUEA member states, but not necessarily in all banks. Outside EUEA, you may have to show a secondary ID (i.e. Portugese driver's license) or the passport from your citizenship country to pass KYC.
To get the ID, you can buy or rent (long-term). If you don't mind a modest one-time tax loss and real estate fees, you can buy, and re-sell your property after you get the ID. Keeping a Portugese condo as an investment is not a bad idea either.
could you recommend me a good real estate website for Asuncion ?
Try Google, but search in Spanish.
Why do you say that in Panama you rarely get the citizenship? I thought all you needed was to speak spanish and prove you have some money. Thats what I was told by a local panamian lawyer.
He has a solution to sell you. You need to speak Spanish, live there, pay tax there, and know Panamanian history to get the citizenship. Dream on that you will get the citizenship if you live elsewhere and only come back for a week or two every few years.
PS, the Panamanian Permanent Residency card (E Cedula), the solution he sells you is not accepted by banks outside Panama. It has no machine-readable code, and no way to digitally verify the document. Not even s*** EMIs will open an account if you present a Panamanian ID card. Most local banks will not accept it either and ask for your passport instead. Real Cedula that the banks in Panama and elsewhere accept is only given to citizens - passport being the pre-requisite. Non-citizens get "E" Cedula, the handy capped ID document, but the lawyers who market and sell Friendly Nations Visa, Re-forestation Visa etc claim it is "Cedula", as if it were the real thing.