Hi. Friends Micromax bolt A37B Smartphone is not a good phone. I already used this phone as my first smartphone 3year ago. This review is for those friends who want a smartphone in lowest price. In this phone there is no 4g connectivity and it has only 256MB ram and 1450mah Li-ion battery at pric nearly 3000 rupees. Now a days we can get 4G connectivity phone with 1GB RAM at nearly RS 4500. So from my opinion as I used this phone it’s not a good phone.It has only 2MP real and 0.3MP front camera and there is no flash so it’s photo quality is very poor. It’s Android version is very old(4.2.2.) and there is no option for updating the android version. It’s batery backup quality is very poor . But friend it is a long lasting phone, I used it without any damage for 3year.