Anusak Laosangthai put The Ronins up in the waning moments of the match.
Phuket's defense was tested heavily for most of the game though the locals still peppered in their chances with long passes.
Eber Henrique, one of two new Brazilian signings, was particularly impressive as he initiated several attacks and help set-up long passes.
The game was the first for The Ronins since their identity change last Friday (January 10) where they unveiled their new colours, logo, kits, and name.
Next Saturday (January 18) Phuket FC take on Vladivostok at Surakul Stadium, 6pm kick-off time.