The Sony Xperia C4 and C4 Dual were expected to move straight
from Android 5.0 Lollipop to Android 6.0 Marshmallow, skipping Android 5.1 in
October of last year, Sony told us that six of its devices would not receive
updates to Android 5.1 Lollipop, instead jumping from 5.0 straight to 6.0(Marshmallow). The Xperia
C4 and C4 Dual were on that list.
though there's an update out for Xperia C4 and
C4 Dual, but it's not Android 6.0.
pushed the Android 5.1 Lollipop update to the handset in the form of build
number 27.2.A.0.155 for the Xperia C4 and build number 27.2.B.0.155 for the C4
Anyway, this is a new Android version, even if
it's nowhere near as big as 6.0. The rollout is currently underway for five of
the six C4/C4 Dual versions out there (with only the E5343 being excluded for
The update will reach you over-the-air within
the next few days.