How to increase Ram on MIcromax A90S... Need Help...

I bought a Micromax A90S, Which is a good phone in its price range....

But it comes with a ram of 512 wich gets used up a lot... I hav rooted ma phone for the Ram expander app, but it says kernal not supported...


So is there there any other way to increase the Ram ??

Plz seniors rply...