02-02-2015 06:30 PM
02-02-2015 07:22 PM
You need a nano SIM for the iPhone 6 alright.
A 48 nano SIM will work in it.
I'm not sure what you mean by "payment card stuff"?
Do you mean Apple Pay?
https://www.apple.com/iphone-6/apple-pay/
If so I'm not sure that the SIM comes into play with Apple Pay but I don't know much about it.
If necessary ask 48 support for clarification:
http://www.48months.ie/help#ask-a-48-agent
Hope this helps.