I bought karbonn titanium s1+ from snapdeal about 12 -13 months ago for 5k bucks. Suddenly, after 10 day its price went to 4.5 k and now in b/w 3-4 k bucks. As far as performance is concerned it have 1.2 quad core but in real it should have one core because of lagging. Its really frustative it cant even run alphast like game.
Battery also drains quickly.