In reply to Ardo:
I got the smiley even if it was invisible. On Vodafone. It wasn't a network issue as such, but related to network...basically I was at Stansted airport which has, three times in 8 days, done weird stuff (mostly "it's showing 3G or 4G but won't actually connect")
A bit puzzling. I understand that a busy airport has a concentration of people who may be clogging up the network but I thhought that was a thing of the past and I've never had it to this extent before