I was wondering if this has been happening to anyone else. I am on an iPhone 6 with iOS 9 beta 5 and AT&T Wi-Fi calling enabled. It seems when I am not using it or not near Wi-Fi my battery is a normal 6-7 hours (usage +standby) but when I am on Wi-Fi and Wi-Fi calling my battery seems to only get about 4-5 hours. Has anyone else been getting this problem?