Catherine's iPhone can be narrowed down a bit more I think, the iPhone 11 Pro in white had a small sensor under the right hand camera lens. The sides appear shiny too which makes me suspect it's not the 15 Pro as the titanium is a duller finish than the previous polished stainless steel. So it's likely a 12-14 Pro, excluding the 11 and 15. (I'd guess we tend to have two year contracts in UK, so it's a 14 Pro but that's just a total guess.)