I tried to read every thread there is about battery life on 8.4, here and on the Apple forums as well, however I cannot find anyone who also has problem so severe. I was behind updating my phone, so I decided to do that just a few days ago. Since then, I experience very bad battery life on my phone. After the update, while doing the same things iPhone eats up so much more battery life, i.e: on an 1 hour long walk I would listen to music, get back home, battery would be around 90, 95% depending if I use the Internet a bit along the way etc. Now, it's down to almost 70, even 6x if I receive a call. Last evening I left my phone unplugged on purpose, on standby, with all apps closed, wi-fi, bluetooth etc disabled at 51%. I woke up to see 41% (?!) and after using it (Safari, Instagram, Facebook, no games) for 10, 15 minutes the battery was down to 35%. I have to add, that I eventually disabled AppleMusic, Apple Connect, but all to no avail. Before the update I paid attention to battery as well; I always review the apps that use mobile data in the background (just a few are enabled), close apps after use, Auto-brightness is obviously disabled, I actually use my phone on about 20-40% brightness. It used to work just fine and prolonged my battery life. Am I missing something? Is there a way I can fix it? Can this be a hardware problem, even though I started to experience it only after installing the update? I'm quite frustrated, cause I used to go full day on one charge, now sometimes I need to recharge just a bit when I'm home, because I know it won't survive the next couple hours and i.e I'm waiting for an important call, and I know that charging your battery not to 100% will only worsen its performance; it seems like a vicious circle.