I have a 928 with 8.1 and I feel like one of the lucky ones! I will admit, I did a hard reset and when I went to restore my phone, I read that I could sign in with my gmail account rather than the hotmail account, I seemingly had to set up when I bought the phone initially. The downfall is that I lost my paid apps, all $15-$20 worth. No big deal really. With 8.1 my battery lasts me the day. I'm not a gamer, or what some would call a heavy user. FB is probably my most used app, along with Pandora (which seems to be skipping some lately), weather, traffic, wpc, I noticed last night that my people hub is working again! I get quite a few emails from the boss and need to keep it on check every 15 minutes. All apps I can turn off are. I never installed any other battery saving app, just using the stock one. My signal seems to be a bit better at home, as I live in an area in Houston with few towers and sadly where I work my signal is worse. When I'm in an area with a good signal my phone rocks! Otherwise, honestly I'm very happy with the phone's overall performance. I came from Android last May 31st, after having 3 Thunderbolts and 3 Rezounds in a year. I bought my phone outright and kept my unlimited data on Verizon. Yep, feeling pretty good! And, with the updates we're getting, I'm just going to keep my 928 at least until the Big V comes out with something spectacular or this one goes belly up.