For those curious as to what OS version the AT&T Lumia 900 was shipping with, wonder no more. It is version 8112 which is just a few builds higher than the current release of 8107, an update that brought the much needed keyboard and security fixes to the OS. That release started rolling out last month to numerous phones and is currently still being pushed out to devices as we speak.
Likewise, the firmware for the AT&T Lumia 900 is at 12082, which is slightly higher than the 12070 firmware that dramatically addresses current battery issues on the Lumia 800 and bug fixes on the Lumia 710.
What makes 8112 OS build interesting is that it's not Windows Phone "Tango" which is thought to start around build 8731 and is shipping at 8773 in China. In fact, even the Lumia 610 has 8763 (thought to be a beta build) which was back at Mobile World Congress.
So what does that mean for AT&T users? Not too much as Tango is mostly an under-the-hood optimization release for those low-end devices that only have 256 MB of RAM. But Tango does have some goodies on board, including a more robust MMS client (multiple picture support, read receipt, voice notes and video) and the GPS-location icon, not to mention any other smaller tidbits we may have to uncover.
In the end, Lumia 900 users will get a solid OS though with no keyboard bug and 4G LTE support which should be good enough for most. It of course will be interesting to see what updates the phone gets though in the coming months.
Thanks, Jeffery B., for the photo!