The Xperia C4 and the Dual variant were released in June 2015, and they came pre-installed with Android 5.0 Lollipop, and after the arrival of Marshmallow, Sony was preoccupied with the release of the update for its Z flagships, leaving these two devices behind. But, later is better than never, and these phablets are now getting Android 6.0 Marshmallow.
For some reason, Sony has discontinued production of the Xperia C4, but there are many people who already bought it and they’ve been waiting for the Marshmallow update, which finally came and it will roll out in the next days to all users. The single SIM models E5303 and E5306 are getting firmware version 27.3.A.0.122, while the Dual model is receiving the firmware number 27.3.B.0.122. If you own one of these variants and want to manually check if the update is available for your device, you should go to Settings > About phone.
Of course, these days, the owners of the newer Xperia flagships are waiting for a sign from Sony to know when Nougat will land on their devices, but Marshmallow is still a wanted update on many smartphones, because it brings many interesting features such as Google Now on Tap, voice search directly from the lock screen, App Permissions, smart lock for passwords, App power saving exceptions, a secret UI Tuner menu, Doze and many more.
If you’re interested in purchasing the Sony Xperia C4 or the Dual model, these are their specs: a 5.5-inch IPS LCD screen with a Full HD resolution, protected with a scratch-resistant glass, a Mediatek MT6752 chipset that houses an octa-core 1.7 GHz Cortex-A53 processor backed by a Mali-T760MP2 GPU and 2GB of RAM. The devices support a microSD card slot, for expanding the internal memory of 16GB up to 256GB, they have a primary camera of 13MP with f/2.0 optics, autofocus and LED flash, and a secondary camera of 5MP with an aperture of f/2.2 and LED flash. Unfortunately, the 2600 mAh non-removable battery has a mediocre lifespan of only 11 hours and 30 minutes, when users make voice calls.
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