Hello,
I just bought my Osmo mobile 2 & just when finished with all the updates & setting as soon as I was exploring the features there was no slow motion feature available.
All the other modes are available like motion lapse, time-lapse & all but no slow motion.
Please help me about this.

No slow motion with Android. You'll have to use another app for that.

Hi,

Sorry for the inconvenience, As of the moment DJI is still upgrading our system so that your device will be fully compatible with our DJI products. Please see attachment below for compatible devices for our OSMO mobile 2.
Compatible devices:
Link: https://www.dji.com/osmo-mobile-2/info#specs

Filmic Pro for Android might have slow-motion.

I believe it does but of course it's 720p. Filmic pro android used in conjunction with the osmo mobile 2 is fairly unreliable and glitchy and even suffers from app crashing. Very unfortunate. Currently, all android apps for gimbals and even filmic pro are unreliable.