Sony isn't known for getting Android updates out especially quickly, and the fact that Android 6.0 Marshmallow is only arriving now (a month after Nougat's official release) for the Xperia C4 and Xperia C4 Dual is proof of that. Then again, this is a last-generation, mid-range phone with an unconventional MediaTek chipset, so we'll cut Sony some slack for this one.
We're well past the point where any Android enthusiast would be expecting (or perhaps more accurately hoping) that his or her phone will be getting an update full of Marshmallowy goodness, perhaps delivered by some confectionary fairy. Alas, for owners of the Xperia C4 and Xperia C5 Ultra, it's a bag full of Lollipops instead. Both phones are now being updated by Sony to Android 5.1, a version of the OS which we'll remind you is now almost a year old.
Both phones began receiving their respective software late last night, at least according to the updated pages on Sony's support site.
When I was in Istanbul last week, I saw street vendors waving selfie sticks (aka the wand of Narcissus) and offering for a few liras to hold your phone so you can take a selfie from a better angle. If something hits the hawker market, it's safe to say that it's pervasive and in-demand. That's the angle that the newly announced Sony Xperia C4 is coming from. Sony even has a name for all the cool selfles that this smartphone can take — PROselfies. Because regular selfies aren't enough.
The recipe for cooking up a PROselfie involves a 5MP 25mm wide-angle lens with Sony's Exmor R sensor, a soft LED flash, and HDR for balancing the exposure as much as possible and capturing both you and your background clearly.