I'm curious to know if the folks getting in excess of 6-8 hours on a charge are in active LTE areas. I don't know that my short battery life is due to this issue, but I noticed that my phone spends a LOT of time switching between 4G and 3G during the day. (My office building in downtown Tampa seems to block significant portions of all cell signals)
When switching between 3G/4G, I have noticed that the "bars" will remain at 3 or 4, wherever they were, but the 3G/4G indicator will simply disappear, as though there is NO data connection. (And indeed, apps using data will fail or force close, web browsing fails, etc.) I can sit there with NO data indicator at all for anywhere from 20 or 30 seconds up to 2-3 minutes, solid. (FYI, there is no open WiFi in range of my office)
I have to imagine that the phone is frantically searching for any data signal it can get during these periods, which is, as I understand it, very power intensive. And I would bet that the phone spends, honestly, 25% of its time inside my office building searching for a data signal.
At home on WiFi, I got 12+ hours on Saturday, with light use.
I want to do some experimenting with WiFi disabled to force the phone to use 3G/4G at home. I am curious to see how much time it spends switching, and how often it switches, as well as battery life results.
As a side note, I took my TB into a corporate VZW store tonight & was greeted by a fellow whose attitude towards my battery issues was not empathetic. He assured me that the battery life was just fine for a smartphone, especially an LTE phone, and didn't seem to understand my frustration. He was all but actually telling me that I was wrong about the battery life being a problem.
Unfortunately, they did not yet have the extended battery in stock. I flat out asked him if they'd be offering that battery at a deep discount, or possibly free, since the phone is nearly universally failing on battery life, and he simply told me it will sell for somewhere in the $50 range. (I already knew this since the battery is on VZW's web site)
I am holding out hope that VZW and HTC will see the light and rectify this situation somehow, at little or no cost to us, their customers. I just hope they give us a sign before the 31st, when my 2 weeks' grace period ends... I don't THINK I will return the phone over battery issues, but I'm not entirely certain I won't.