This is the problem. Either it works and I can rely on it, or I am just going to use my credit card. If it works 4/5 times, that means it still fails 20% of the time and debit card works 100% of the time.
Say it works 9/10 times... What am I going to do, roll the dice and take a 10% chance I have to tell the cashier to put everything back because I don't have my wallet?
Don't get me wrong, this is the best phone I've ever seen. I have used NFC payments for 5 years now. I just accepted at first that I was an early adopter. I want it to become the standard. Now it's time for it to work or I'm done with it.