[RESOLVED] Odd currency behaviour using mobile

Hi all
OC 2.1 site is http://www.mybutcher.shop/t2

on desktop everything appears fine and the sterling default currency is used

on mobile (even though default currency in settings is still set to sterling) launch site and everything is US$
the details of the product, ordered items even confirmed emails

what is happning and how do i fix it?

george

LOTS of reads but nobody with a reply??

My good friend Phil Brighton tells me I need to clear the cache on my phone
Not sure why it defaults to US$ but looks like the issue..