10 Cheapest And Best Smartphones To Buy Under 
4,000
#2 Lava Iris 351 Price: App. 3,899
Lava iris 351, the dual-SIM Android Smartphone is powered by 1GHz processor and comes with 256MB RAM on board. The phone runs on Android 2.3.5 Gingerbread and sports a 3.5-inch touchscreen which has a resolution of 320x480 pixels and features a 2MP fixed-focus rear camera.
The phone’s internal memory is limited to 110MB and supports memory cards up to 16GB. It doesn’t support 3G data but can connect to the Internet via GPRS/EDGE. The handset also offers FM Radio and FM radio recording but lacks in 3G connectivity.
#1 Karbonn A1 Price: App. 
3,660
The dual-SIM Smartphone, Karbonn A1 comes with a 3.5-inch capacitive touch screen and runs on Android 2.3 Gingerbread operating system. It is powered by 1GHz processor and has an expandable storage capacity of 32GB.
Besides, it is equipped with 3MP HD primary camera and a secondary camera support. It includes various multi-media features such as FM Radio, Music Player and Games. Connectivity wise, it is Wi-Fi enabled as well as 3G and Bluetooth. The device is packed with Li-Ion 1100mAh battery which offers up to 4.8 hours talk time and 250 hours of standby time.
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