John: But that’s– That’s the phone. The pink phone.
Lestrade: What, from the Study in Pink?
Sherlock: Well, obviously it’s not the same phone but it’s supposed to look like- The Study in Pink? You read his blog?
Lestrade: ‘Course I read his blog! We all do. D’you really not know that the Earth goes round the Sun?
Sherlock: It isn’t the same phone. This one’s brand new.
John looks like a little boy that’s just been caught out.