Well depends on what ur preferences are... but in 15ks u just CAN'T get a smart phone that is smart!
All branded phones in this range are too damn slow! U at least need a quad core with a GB of ram... nothing less.
Frankly... functionality is much more imp than brand... u can either wait to collect more money, get a used phone or my suggestion is to consider Qmobile, its phone are miles ahead in price performance ratio or id also say price to antutu benchmark ratio...
Id suggest u Qmobile noir a550 in ur budget... u can get one in 15.5ks easily. Its originally EXPLAY FLAME. Explay is a Russian cellphone manufacturer.. Qmobile rebrands and sells phones by many big manufacturers that are available in many other countries but not in Pakistan. The phone itself is awesome in its price!
Such as micromax, fly mobile, explay etc.
Noir A550 has a17,500 benchmark! That is freakin amazing for its price...
Or u shud wait... dont buy crap outta box by going for branded in this range! Proper smart phones start from 35ks plus by brands like samsung.
Dont be fooled to buy a 512, 786 mb phone. In today's era u need at least one or two gb of ram.