The smartphone runs on Android 2.3 Gingerbread operating system which is upgradable to Android 4.0 Ice Cream Sandwich operating system. The device features a 1 GHz dual-core
NovaThor Cortex A9 processor with Mali-400 GPU. In terms of memory capacity, the Xperia U hosts 512 MB RAM paired with an internal storage capacity of 8 GB out of which only 4 GB is accessible. But the saddest part of it, the device does not house a microSD card slot and therefore the storage capacity of the smartphone cannot be expanded.