The MoMo Chennai edition is on the next weekend at Gandhi Nagar Club, Adyar, Chennai (This might change. )
For those not in the know, here’s the fount of all wisdom, the Wiki, on Mobile Mondays

Mobile Monday (MoMo) is a networking organisation for mobile industry professionals fostering cooperation and cross-border business development through virtual and live networking events to share ideas, best practices and trends from global markets. Founded in autumn 2000 by Mobile Monday Oy in Helsinki, Finland, Mobile Monday now has 47 chapters worldwide, which host meetings on a selected Monday evening each month.

Shorn of all that jargon, it’s a place to catch up with the latest technology in the world of mobile telecommunication.
The Chennai version this month will cover mobile web and application development. If you are interested, go forth and register. Only 75 seats, and 50 are already taken. So you might want to rush!