Australia were 245-6 and Carey on 72 when England thought they had him caught behind off Tongue. Umpire Ahsan Raza rejected the appeal and England immediately reviewed.
Despite a large of sound on the Snicko technology, TV umpire Chris Gaffaney did not overturn the decision because the ball appeared to be away from the bat when the sound occured.
It later emerged it was a mistake by the Snicko operator, who used the microphone at the bowlers’ end used, rather than the strikers’ end.
BBG Sports, the company that owns Snicko, accepted culpability and there was more controversy around the technology involving England keeper Smith the following day.
Meanwhile, Carey went on to make a crucial century on his home ground as Australia posted 371.