Earlier reports indicate that Sony had planned to update at least six devices running Lollipop 5.0 to the latest 6.0 Marshmallow OS, including the Xperia C4 and the Xperia C5 Ultra. However, Sony surprised fans recently by releasing Android 5.1 Lollipop for the Xperia C4 smartphone, and now, the Xperia C5 Ultra is also receiving the Android 5.1 OS.
Last year, Sony had pointed out that six of its devices would not receive Android 5.1.1 Lollipop. These devices include the Xperia Z3+, Xperia Z4 Tablet, Xperia C4, Xperia C5 Ultra, Xperia M4 Aqua and Xperia M5. Even though the devices were running on 5.0 Lollipop, they were soon expected to receive the first taste of Marshmallow, reports GSM Arena.
However, the Japanese multinational conglomerate company started rolling out Android 5.1 Lollipop for its Xperia C4 Dual, instead of the latest Marshmallow update. The rollout of the OS is currently underway for five of the six C4 Dual versions. Needless to say, the Android 5.1 Lollipop version is not as powerful as the latest Android 6.0 Marshmallow OS.
According to the Xperia blog, all variants of the C5 are now receiving the Android 5.1 firmware update. The C5 Ultra Dual (E5533, E5563) is updated to 29.1.B.0.87 version and the Xperia C5 Ultra (E5553, E5506) is updated to build number 29.1.A.0.87.
The C5 Ultra was released in August, 2015. It has a 6.0-inch display screen with 1,080 x 1,920 pixel resolutions with 367ppi. The phone boasts of an IPS LCD capacitive touchscreen with scratch-resistant screen. It has an octa-core 1.7GHz Cortex-A53 processor running inside. The phone has a 13Mp rear camera and a 13MP front camera.
On the other hand, the C5 Ultra Dual was also released in August last year. It sports a 6-inch display screen with 1,080 x 1,920 pixel resolutions with 367ppi. The phone has an octa-core 1.7GHz Cortex-A53 processor and has a Mediatek MT6752 chipset inside. The primary camera of the handset is 13Mp and the rear camera is also a 13MP sensor.