The Micromax Bolt A28 run dated Android 2.3 Gingerbread, and is a dual-SIM device with support for GSM+GSM. It features a 3.5-inch display with 320x480 pixels resolution. The Bolt A28 is powered by a 1GHz Spreadtrum SC6820 processor along with a 256MB of RAM. It sports a 0.3-megapixel rear camera, while there is no word on front camera.
It comes with 512MB of inbuilt storage, which can be expanded up to 16GB with the help of a microSD card. The Micromax Bolt A28 packs a 1500mAh battery, which as per the company's listing, can deliver up to 4 hours of talk time and up to 160 hours of standby time.
Connectivity options on the Micromax Bolt A28 include Bluetooth, Wi-Fi, GPRS, EDGE, GPS/ AGPS and Micro-USB. The Bolt A28 does not support 3G networks. It measures 116.9x62.5x12.5mm and weighs about 89 grams.
The Micromax Bolt A59, on the other hand, runs Android 4.2.1 Jelly Bean out-of-the-box. Micromax's new budget Android smartphone is a dual-SIM (GSM+GSM) device with dual standby support. It comes with a 3.5-inch display with 320x480 pixels resolution, and is powered by a 1GHz Spreadtrum SC7710 processor along with a 256MB of RAM.
It includes 512MB of inbuilt storage, which is further expandable up to 16GB via microSD card. The Micromax Bolt A59 sports a 1.3-megapixel rear camera with LED flash and also includes a VGA front-facing camera. The device packs a 1500mAh battery that the listing claims can give a standby time of up to 160 hours and up to 4 hours of talk time.
Connectivity options on the Micromax Bolt A59 include Bluetooth, Wi-Fi, Micro-USB, GPRS, EDGE and 3G. The smartphone also comes preloaded with apps such as Hike, Opera, Spuul, Game HUB, Kingsoft Office and M! Live.