I have used Revolut w/out problems in: South Africa, US, Dubai, UK, France, Portugal and here in Ireland. They have recently introduced contactless and I've ordered one of them. I am a HUGE fan of Revolut. The only drawback that bugs me somewhat is the 200 Euro/STG limit on withdrawals. But in fairness, it is increasingly easy to use the card in lieu of cash. I have also opened an N 26 online account in Germany, the card hasn't arrived yet, but I lodged money and it showed up in the account in 24 hours on the app. I don't know how Revolut do it, but in my experience, money transferred to them shows up in a few hours. I also had some small technical problems whilst using it in SA. It's defaulted that you the card must be used in proximity to the phone registered to the account (how cool is that?) but I used to travel w/out my Irish phone for security. I contacted Revolut, they walked my thru turning this off pronto. Service was very good. When I was using my P/TSB account in the UK a few yrs ago, I was hit with 'conversion charges' and a rubbish FX rate, and in one instance, a 5.00 STG charge for using the card (this was by the local UK bank) for w/drawing 200 STG. Goodbye & good riddance to all that.