Karbonn A40 Plus features a 5 inch display with a resolution of 480 x 854 pixels. It runs on Android 4.4 KitKat operating system and is powered by a 1.2 GHz Dual Core which is coupled with 512 MB RAM. The device sports a 5 MP rear camera and 0.3 MP front camera. It has an inbuilt storage of 4 GB which can be expanded up to 32 GB via microSD. The battery capacity of Karbonn A40 Plus is 1700 mAh.