[danielweber]

I can type right into a drop down, and 99 times out of 100 it will do the right thing.

(Sometimes it's weird with a list of states, where it might be sorted by the state abbreviation while showing the state name or vice versa.)

[josso]

Unfortunately, many payment systems represent the dropdown for the months with zero-padding while others are without. Usually, typing the 0 (because it's on the card) will – if it's not included in the dropdown – not select the correct month. This can cause frustration for the end user. The best way to input credit card information, would be to only have text-fields.

[mrobins]

agreed but on mobile I find spinning through the drop-down more annoying than typing the exp date.

[kalleboo]

I really hate the spinner for all the date selectors on iOS - it's cute, but a keypad is way faster.