There Are iOS 9 Problems
Apple's iOS 9 beta focused on squashing problems and improving performance but iOS 9 problems still slipped through the cracks.
From download issues to problems with battery life to issues with Wi-Fi, iOS 9 problems are impacting more than a few iPhone 6 owners in the United States and abroad. That said, none of these problems appear to be widespread.
Instead, the iOS 9 problems we've seen have been isolated to just a few iPhone 6 users. Complaints might pick up as time goes on but major iOS issues typically reveal themselves right after a release. We haven't seen any.
Still, you'll want to be careful, especially if you're reliant on your phone for work. Dig into feedback and then make your decision.