Sony Xperia Z1s finally receiving Android 4.4.4 KitKat update

Screen Shot 2014-08-06 at 14.06.08

Heading over to T-Mobile’s support section, it’s clear that customers have been eager to know the carrier’s plans for the Sony Xperia Z1s for some time. Thankfully, the wait is over and Android 4.4.4 has finally arrived for the T-Mo exclusive device.

A reader got in touch with us this morning with news of the update, claiming they were able to install it OTA. So if you have a Sony Xperia Z1s, go in to your settings menu and check for software updates and you should see that it’s available to download. If that doesn’t work, you can also install it using Sony’s PC Companion software. To update, you must be using stock software, so rooted phones will not be able to update from what we’ve heard.

He noted:

“I will say, when the phone first booted up after the update it played that familiar Playstation music like when you start up your PS4. The UI is beautiful and very smooth!”

Let us know if your experience is the same as our readers, and if you manage to get it installed. Full screenshot below shows the About section on the updated phone, clearly showing Android version 4.4.4 and Z1s model number C6916.


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  • rob

    Computer only wtf

    • Verizonthunder

      Quit your bitching at least you can update your phone for those who have the original Sony Xperia Z are still left in the dark.

  • Gemin Palumbo

    Yeah, You HAVE to use the Sony PC Companion to do the update. It’s strange.

    • Verizonthunder

      It’s better than nothing

      • Gemin Palumbo

        oh I agree, I’m glad for the update.

    • KlausWillSeeYouNow

      Xperia Z2 owners had to install their latest update via PC Companion, too.

  • impasse

    does this fix the google play services battery life issue, i wonder..

  • qpinto

    it took long enough. longer than i expected for it to get the update thus i returned the z1s. great phone otherwise

  • james

    To late got a g3 now tired of waiting

  • substance

    FINALLY!!! What a great way to start my day.

  • Jimmy James

    Where is the HTC One M8 update? We are still on 4.4.2 and 4.4.4 is available. Why is this older phone first on T-Mobile? T-Mobile received technical approval to release to public for the HTC One M8 last Friday.

    • qmc

      Still don’t have 4.4.4 on my nexus 7…. Thanks for the hold up Verizon (yes, mine is on T-Mobile LTE)

    • UMA_Fan

      They have to test T-Mobile specific software on it I’m sure. Like WiFi Calling and VoLTE.

  • Jon

    No ota installation possible. PC is required

    • Verizonthunder

      Again it’s better than nothing at all

  • Irvin Arreola

    About time!

  • Verizonthunder

    What about the Sony Xperia Z?? Left in the dark again ugh

    • kevev

      Most likely the way it will be. So sad. I ended up selling my Z and now have a Nexus 5. This thing is awesome in so many ways. :o)

  • Vomitous Mass


    HTC M8 on T-Mo still using 4.4.2….

    (HTC Is not going to 4.4.4, but has at least updated to 4.4.3…what’s the hang-up, T-Mo?)

    • Chris

      There’s really nothing in 4.4.3 and 4.4.4 other than OpenSSL fixes (natively) etc. These vulnerabilities by the way were also patched or blocked by Google Play Services for non 4.4.3 and 4.4.4 devices. So I don’t know what’s everyone’s rush to get to 4.4.3 and 4.4.4 except a version number bump.

      Might as well wait for 4.5 or 5.0 whatever they number Android L.

      • Paul Hansen

        Z1s was on 4.3 not 4.4.3. It’s actually a sizeable update.

  • UMA_Fan

    Hopefully the HTC One M8 gets VoLTE

  • starpintr

    The owners of Samsung note 2 are also still in the dark. It has been over six months and no further word from Samsung or T-mobile.

  • VegasDude73

    Yep just updated mine. Wonder what the new features are other than the standard ones.

  • AdamBath

    About time! And here’s the root method:

    Rooted phones seem to update fine.

  • David Rubio

    Happy they finally got the update out for us Z1s owners. I was starting to think we weren’t gonna see kit kat.

  • Allen Straith

    It’s not working for me. Say’s I have the latest update :'(

  • Allen Straith

    Sony says they haven’t released the update. I think it was released early or something. Because it’s not available anymore.

    • ASHGAB

      I talked to t-mobile and they said August 12 is the official date

      • Allen Straith

        Thank you for that. I’ll keep checking.

  • Carlos Ventura

    Got and its koo

  • Stone Cold

    I got it

  • hailey

    I don’t really like the update, it doesn’t say what percent the batteries at, and when you are talking on the phone it doesn’t shut the screen off so you don’t press buttons with your face. Other then that the rest are okay

    • brett

      Have to find the battery display in the settings. It is there, just have to do some looking. As for the screen, same thing. I received the update and all is good.