Hey guys what's up , i've seen many reviews about the beta 4 of iOS 8.3 that is has some noticeable improvements regarding stability / lag / battery life . People saying that they are getting faster usage and better battery life compared to official iOS 8.2 but as we know beta version usually comes with signal/battery life issues so i want if anyone of you guys using the iOS 8.3 beta 4 on the iPhone 6 share with us how is it going