I was using MICROMAX Q3 from last 3 months and I was having one big problem that was earphones I was not getting it anywhere and you cannot use earphones while charging because only one jack for both, screen was not so good but when I saw MICROMAX Q5 it fulfilled all demands which I was demanding..
Pros.
Cool awesome phone
Amazing display
And trackball..
Amazing sound you know YAMAHA rocks!!!
Cons:
There is only one green call button means you will go through 2-3 menus to call
There is only one inbox for both sim s there is mess up msges
But overall 4200 rs is nothing for this mobile. If you really want to have a feel of Blackberry than go and buy this phone thats why it is called Poors Blackberry :)