Unfortunately phone has 512MB of internal storage only.
The manafacturer customized the rom to be able to install apps in sd (in storage at settings)
I set it as default install location. But when the internal storage left no more space, I wasn't able to install any apps from the Google Play. It says insuficient storage. But when I install an app in .apk from my sd card using file manager. It do install. One thing that I notice is apps do install in sd but also consumes internal storage. Please help. I'm a android newbie. My phone is not yet rooted.