T-Mobile. the fourth largest wireless provider in the United States is the first phone carrier to unleash the Android 4.4.3 update for the Nexus 5 and the nexus 7 with presumably two more Nexus models on the way. We fully expect the Nexus 4 and Nexus 10 to join in on the action very soon. This update has the build number of KTU84M and has commenced rolling out OTA. If you are receiving this update, please tell us what changes you are finding. We will also report on it throughout the day as much has we can.

Go to Settings > About device > Software updates > Check now to see if it is ready to for installing on your handset. Otherwise, wait for the notification to appear as a system update message. If you have root this message will not appear, and you have no way of updating until the file comes out, and you install it manually. No doubt we will be covering that soon enough. I look forward to writing that up for you so when you are ready to check back it should be up and running.

Nexus 5 T-Mobile

Google’s timing on this update is very timely indeed, coming on the same day that Apple released iOS 8 and live streamed the event live on the web for everybody that owns Apple devices ranging from iPhone’s through to iPad’s and Mac’s. OS X was also updated to Yosemite, which is a new version of operating system for Mac.

T-Mobile is nearly three times as small as Verizon, who are the largest wireless company in the US. It is a surprise to see them come out first with the goods, but that is a situation that can happen. It is not always the biggest companies that get these software upgrades first. However, there is a trend of the one’s with few subscribers getting it towards the end.

The Nexus 5 file size for this update is 54 MB. That is not a large amount of data so if you are sitting there with ants in your pants waiting to update, and you are not yet home, you can go ahead and install this using the mobile’s data plan without using it all up.

Being only 54 Mb in size it tells me there isn’t a lot in this update when thinking about features. Sometimes software upgrades can result in hundreds of Mb being used in the process. The good news is that if a mass of features isn’t coming to us here then it will soon enough when we start receiving the Android 4.5 update beginning with the letter L.

Remember that this update has commenced today for some users and not all users will get it over the next 24 hours. It can take several weeks for updates to roll out to everyone. If you are one of the lucky ones to have it already please tell us what you find. Details are scarce at the moment, and we look forward to updating this page with more information.