I'm absolutely fuming, I had a perfect phone that had no issues whatsoever and then from the night of the last phone update the battery is not the same! I usually put the phone on the charger once a day in the evening, take it off the charger when it reaches 100% and when I wake up it's still around 90% and that usually gets me through the day. Since the update minimum 30% of the battery is used overnight, I wake up to have 60-70% battery life left and have to charge 2-3 times a day! Absolutely ridiculous! And it literally changed overnight when the update has gone through. I googled the issue and I found many people have the same issue. I tried customer service but they said an update cannot be rolled back... Not sure really who to contact to report this, but I'm sure it's a serious issue pushing people buy new phones with rolling out updates to drain phone batteries... Very disappointed.