'Insufficient space on the device' So, I'm having problem downloading apps from Play Store because apparently, I have insufficient space on device. The app I want to download is of only 12.68 MB and my system storage has 113 MB, phone storage has 596 MB, and SD card has 1.46 GB available. 
I tried cache cleaning, uninstalling unwanted apps, moving the movable apps to SD card but it still won't work. 
The device I'm using Micromax Bolt A089 with a 4 GB SD card. 
Please help. Thank you.
I think what you have to do is to delete the large apps then after installing the app reinstall the large app that you deleted because then it simply moves it to SD card sometimes by itself