Sony Xperia Z1s Gets Android 4.4.4 KitKat; New Firmware Certified for Xperia Z1, Z Ultra, Z1 Compact

By @Seju_Juni on

T-Mobile Sony Xperia Z1s receives an Android 4.4.4 KitKat update with build number 14.4.B.0.37, while Xperia Z1, Xperia Z Ultra and Xperia Z1 Compact gets a new certified software from PTCRB.

Sony Xperia Z1s Android 4.4.4 Update

Sony and T-Mobile finally release an official Android 4.4.4 KitKat update for the United States variant of Xperia Z1, the Xperia Z1s. It has the firmware build version 14.4.B.0.37 delivering similar changes, enhancements and improvements found on Android 4.4.4 KitKat from Sony Mobile.

At this time, the official software support page of Sony Xperia Z1s still notes Android 4.3 Jelly Bean as the latest update available, but users can now try to upgrade the software using Over-the-Air update service via Update Centre on the smartphone based on the images posted by XperiaBlog.

Here are the details of the Android 4.4.4 KitKat based on Sony's official change logs for Xperia Z1:

- Standard Android 4.4.4 KitKat enhancements and security updates from Google

- Updated and improved camera experience

- Improvements when using Google Voice, Contacts, Google+ and music streaming

- Latest versions of all Sony apps

- Latest bug fixes, optimisations and improvements.

In addition to that, users will also receive several benefits from Android 4.4 changes from Sony such as revamped user interface for the status bar and Quick Settings, Sony PlayStation 4 boot animation and wallpapers, and downloadable contents for the Xperia Themes feature.

Sony Xperia Z1, Xperia Z Ultra, Xperia Z1 Compact New Firmware

A new firmware has been certified by PTCRB for Sony Xperia Z1, Xperia Z Ultra and Xperia Z1 Compact carrying the build version 14.4.A.0.133 which will move selected models from 14.4.A.0.118 and older 14.4.A.0.108 version upon release.

Since the numerical code on the firmware build version only changed slightly, it is expected as an incremental update with bug fixes, security enhancement and improvements for these devices. Below is the list of models compatible to the firmware, according to PTCRB:

1. Sony Xperia Z1: C6902, C6903 and C6906

2. Sony Xperia Z Ultra: C6802, C6833, C6843 and C6806

3. Sony Xperia Z1 Compact: D5503

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