Stupid when I need this card the most, it just don't work even once. Morning till night everytime I try Amaze, all rejected. "We're writing to let you know that your transaction of KRW 2,000 at SSIYU(CU) IN was declined due to our security and risk policy." 12 different transactions all rejected.
I'm surprised Korea is totally cannot mobile contactless kind, they're super reliant on MST card technology still. given I kept thinking Korea is super advanced nation I went there with my Samsung Pay cards, Amaze and Revolut. Samsung pay can't even tap without MST unless I bring my older phone models. Only Revolut saved my day at the end.