Hello guys, I am telling about for this smartphone karbonn A40. I have bought it for amazon. I am used this smartphone it’s works properly 6 to 8 month after that the phone was hanging problem. I am very excited to purchase this smartphone but It’s is not be good . It’s battery was heating . I am not be happy to purchase this phone . It’s processor are very slow only 1GB RAM storage and 8GB internal memory storage 4.0 inch screen and camera qualities is not be better only 2mp rear and 0.3mp front camera. 1.4 GHZ quad core processor. Weight of this phone is only 118g It’s price is very low only 3499 rupees. And very important problem is sound quality is not be good . This is very slow smartphone and it’s looking is not be good. I am not be happy to purchase this smartphone. This phone is not be better than any other company phone. Like redmi, coolpad .