This product was so bad one. With in a month there were issues coming. Starting with key pad. I would have gone with other company. Thought of karbonn should be the best one than others. But i was wrong. Very much wast of money. Please don't cheat customers with your defective items and spoil the trust on your company.
After using it for one month, this is what I have to say about K140 pop music, It assures you the value for the money.
Dual sim 0.3mp camera 1000 mah battery Bluetooth Wireless FM Double led torch Expandable memory Auto call recording Video player Music player Mobile tracker Auto redial Blacklist (for blocking numbers)
The battery is just okay. Average voice calling quality. I can't find vibration mode and I don't think there is one. There's no USB cable for data transferring ...