All goals were scored in the second half, by Wasan Natasan (no 9), Ney Fabiano (no 11) and Cristian Alex (no 10).
The win gives the Ronin 17 points after 9 matches of the 34-fixture season, enough for 3rd place, just behind Nakhon Ratchasima FC and Angthong FC who have 18 and 20 points, respectively.
Phuket now prepare for a tough Toyota League Cup match on Tuesday (April 29) against Thai Premier League side Police United.
Kickoff at Surakul Stadium is at 6pm.
Their next league match is away next weekend to 2nd place Nakhon Ratchasima.
Stay tuned for full report and video highlights.