Updated my HTC One S today with the new firmware, saw an instant improvement with the Wifi Calling. I used to see a downward spiral in my battery life, now it's completely plateaued. Good job T-Mobile!
I was disappointed that after getting the update, today was one of those random days where I had terrible battery life. At least for my phone, the update definitely did not resolve this issue.
I find the act of updating will tax the battery, but it should go back to normal or improve after that. I generally am around 50% at the end of a 15-16 hour day. The day of the update I was at around 6% at 15.5 hours when I put it on the charger. The next day I was back at the usual.
For anyone still waiting, you should verify that your phone meets these prerequisites:
Device is running Android version 4.0.3 / Software version 1.53.531.76 710RD
Device software is not rooted
More than 50% battery life
350 MB available memory (File size of update is 24.2 MB)
Have no idea when mine updated but I checked the versions and mine is updated and running just fine
make sure that it really is running on that version. the reason i say this is because when i updated, after the phone was done it did not promt me to download and there was no more notification. when i went and looked at what version i was running it said 1.84.531.2 710RD, but I didnt install it yet. so i was confused. i hit on check for update again and it promted me to install the new update.
So an update...for the first week or so after I updated I saw no change in my signal loss/reconnect problem. BUT in the last week or so I have seen my signal stabilize greatly - to normal levels. And when it does drop, it will re-establish itself easily now. So I am quite satisfied with things now. But it makes me wonder whether or not before was actually a bug/conflict of a really common (like Facebook) app rather than the phone software, and an app update fixed things. Or maybe something with T-Mobile's network that has been fixed. Just wondering out loud...