4. LG Optimus 3D

LG jonied the dual camera smartphone market with the LG Optimus 3D. The Optimus 3D smartphone launch was in 2011. This Optimus 3D runs on Android 2.2 (updated to 2.3 Gingerbread) OS and Dual-core 1GHz TI OMAP4 processor. It sports a 4.30-inch touchscreen display with a 1500mAh non removable battery. This phone is equipped with 512MB RAM and 8GB of internal storage that can be expanded up to 32GB via a microSD card. The LG Optimus 3D packs a 5MP for the back cam and a 0.3MP for the front cam.

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