Recently, we got Android 5.1 Lollipop from Sony for the Xperia C4 phone. However, this was quite unexpected as the Japanese giant previously said that this device will never be updated to Android Lollipop. Sony also released a list of devices that will not get Android 5.1 update but will be directly upgraded to the Android 6.0 Marshmallow.
Today, there are reports that a new handset from the manufacturer will also get the exact same treatment. The Xperia C5 Ultra from the maker was supposed to get upgraded to the Android 6.0 Marshmallow soon. But the phone is receiving Android 5.1 Lollipop instead.
It is revealed that this new release is being to all the variants of the Xperia C5 Ultra regardless of the regions where they are being sold. When it comes to the model numbers, the update is expected to come for the handsets with these model numbers. The single SIM phones with model numbers E5553 and E5506 will receive this update while on the other hand the dual SIM phones with model numbers E5533 and E5563 will receive this update.
Because this is a staged rollout, so you will have to wait some more before this update hits every device available. If you have a single SIM Xperia C5 Ultra the once you apple for the update you will be on the build number 29.1.A.0.87 while on the other hand the Xperia C5 Ultra Dual will be on build number 29.1.B.0.87.