Australia beat Pakistan from 7 wickets,,,9 balls left
The right-hander hit 80* off 51 balls as the hosts chased down a target of 151 in with nine balls to spare to go 1-0 up in the three-match series. The first T20I in Sydney was abandoned due to rain.
Smith reached his fourth T20I fifty with a classic boundary off Irfan in the 15th over. The former skipper hit three fours off Amir in the 17th over and two successive boundaries off Wahab Riaz in the next over.
His unbeaten knock was studded with 11 fours and a six. The final T20I will be played in Perth on Friday.