need a phone under 15k

Xperia U would be my recommendation if you are okay with 8gb memory (4gb user accessible + 2gb for apps). Otherwise look at the HTC One V.

xperia u if you can live with 6 gb storage.
else xperia neo v.

^ +1 to that

but i advice to really think about the 4GB storage ..u may think its sufficient now but may not after

If you can live with store available in Xpeira U then go for it.
And if you can compromise on screen size then go for Live With Walkman.
And if you are flexible with the budget then get Neo V

if u can strectch ur budget to 18k Go for Xperia NEO V

(or)

U can see Samsung Galaxy ace Plus. for 15.5k

Neo v pr xperia pro....buy from ebay at 14 k.

OP doesnt have to really extend the budget to 18k ..its around 16k now

in 18k range sola is better

Xperia is the best option for you...