I'm sorry, but I probably didn't make it clear. I've tried this after several different stores. I only have one BoA debit card on my phone.
If I use Samsung Pay to pay using MST(the machines doesn't have touch to pay), it ALWAYS asks me to enter my PIN#. At a couple of store including Walmart, after I enter the PIN#, I'm asked to sign my name as well. Then the receipt gets printed out.
If I take the actual BoA debit card and swipe normally, the transaction is approved and the receipt gets printed out.(half the time the machine doesn't even ask me to sign)
That's why I'm confused.