Android Marshmallow update hits Sony Xperia Z5 series of smartphones. The update is currently available for Thailand and Russia and expected to receive other countries soon. The update is available for both Xperia Z5 Dual and Xperia Z5.
The update makes the device more faster and smoother and most importantly they just removed the famous Stamina Mode of Xperia. The update decreased the CPU usage and RAM usage and brings some noticeable changes in performance. Now the apps open very faster than before.
Anyway check for updates on your Xperia Z5 and enjoy the features of Marshmallow.