<deleted>, it has nothing to do with smartphones, boiler rooms have been cold-calling people out of the blue and getting them to go down to the bank and transfer huge sums via wire transfer for decades.
As for complexity, the premise always breaks down to one simple leap of faith, greed that makes people overlook the scam that is obvious to everyone else.
After decades of hosting the foreign fraudsters that plied the Western world with their scams from Thailand, thais are no longer protected by the agreements that used to ensure the boiler rooms didn't scam people inside the country and they are 10 years behind the learning curve, kind of like Australians and Europeans in the 2000s
https://pantip.com/topic/42437394
What is interesting is that on panthip.com many are saying that they sound like they are using google translate in their line groups, so likely not 100 percent local in their operations