Re: My partner hates me..
I wouldn't use mobile banking apps either, despite having a secure Android device..
'Basics of how devices get infected'. Android's marketplace is better than it was, but still not perfect. Many apps are updated on a weekly basis, or even more frequently. It only needs one app to be infected by a trojan.
Banking websites I try to use on a secure platform, using a decent browser, and no other tabs open at the same time (in case there's a missed x site scripting exploit).
I'll happily use contactless - a great invention, but it's currently capped at a sensible thirty quid. If the limit was higher I'd get it disabled for my cards.