u will have to compromise on atleast one feature...
Samsung champ 3.5g and samsung chat 527 have secondary cam and wifi but not dual sim...
micromax ninja a50 has everything xcept secondary cam...
increase ur budget a wee bit and get micromax a73...
*www.thinkdigit.com/forum/buying-advice/150741-mobile-reference-guide-july-2012-a.html
Here you are suggesting OP to go for a micromax phone.
customer care horrible
fone malfunctions
u still want micromax???
Lets play a game-
Close ur eyes.
i place 3 fones b4 u i.e Lumia 710,Micromax A85(google it) and a samsung galaxy s..(same price)
what wud u pick???
And you know it is not a wise choice.
IMHO, we should not suggest a product if we know the negative aspects of it.
Just a suggestion.
If the op can live without dual sim, samsung champ 3.5G (s3770) and samsung primo can be good options.