New Zealand posted a challenging 4-160, thanks in large part to a brilliant unbeaten half-century from 35-year-old Devine, then rolled India for just 102 in 19 overs for just their second win in 14 T20 matches this year.
Devine cracked 57 not out off 36 balls with seven boundaries to propel New Zealand's total in the last five overs.
India's wicketkeeper Richa Ghosh failed narrowly to stump Devine. (AP PHOTO)
"I'm really proud of this group. People have been speaking about our recent results, so to come out against a world-class side like India, to produce that performance I'm overwhelmed," said Devine.
"We've been targeting this game for a long time. To come out and lay a marker is great, but we've got a long way to go in the tournament."
The match featured a controversial moment when a run-out dispute stopped play briefly as India thought they'd dismissed Amelia Kerr well short of her crease at the striker's end in the 14th over before the umpires ruled it had been a dead ball.
Kerr had walked to almost the rope boundary the ruling by the fourth umpire.
Still, there could be little argument about the New Zealand domination of an Indian side which has been tipped as the side most likely to end Australia's bid for a fourth successive triumph.
Kaur was the first to admit: "They played better cricket than us, no doubt about that. Fielding we made some mistakes, so that is a learning for us going forward."
Devine's strong finish followed a fine opening stand of 67 off 46 balls by Georgia Plimmer (34) and Suzie Bates (27).
They both perished while looking for big hits, but India's hopes of a comeback were stymied by Devine raising her fourth T20 half-century off 33 balls. New Zealand racked up 51 off the last five overs.
Rosemary Mair then trapped India captain Harmanpreet Kaur inside the powerplay in a scene-stealing 4-19.
She also claimed the last two wickets off successive balls, while fast bowler Lea Tahuhu chipped in with 3-15 to help bundle out India with an over to spare.
Eden Carsen struck off her first delivery with a caught-and-bowled of Shafali Verma, and in her next over dismissed Smriti Mandhana on 12. India couldn't recover after the dismissal of their star players so quickly.
