The Asus Zenfone 2 Selfie comes loaded with Android 5.0 Lollipop, but it is upgradable to Android 6.0 Marshmallow via the OTA provided by Asus. The operating system is flaunted with Asus ZenUI that has an improved camera UI and many other improved elements than the stock Android Marshmallow. The Snapdragon 615 octa-core processor resides in the Asus Zenfone 2 Selfie. The RAM and the internal memory on the device are 2GB
and 16GB; the latter is expandable up to 256GB via the dedicated microSD card slot.