iOS 9 is available from Monday for developers' iPhones, iPads and iPod Touches, but anyone interested can install iOS 9 at the moment for a he struggles with it test it.
I have already talked to you in two articles about my opinion about iOS 9 si iOS 9 battery life, and if those articles did not convince you that you should avoid upgrading to this version of the operating system for now, then maybe the following ones will.
iOS 9 has worse performance than iOS 8.3 on all terminals tested, and depending on how many applications you have open in the background, which websites you visit or how many things it does simultaneously, the terminals may freeze or restart.
Applications, whether native or third-party, have major performance problems, some of them not sending notifications for messages, others having extremely poor performance with functions that cannot be used, or used only to a certain extent.
Is iOS 9 worth installing?
Moreover, you cannot properly receive files via 9 iOS AirDrop, Touch ID has moments when it is very difficult to respond to commands or does not respond at all, and the interface has certain missing elements in various menus of native applications.
Terminals get extremely hot when you browse the Internet, take pictures or use navigation applications, and this is because they also run various diagnostic services in the background that require a lot of resources.
Combining all this with an excessively high battery consumption, I will tell you that iOS 9 is not worth installing in the current beta version and this because it spoils the experience of using an iPhone terminal, so install it on secondary terminals.
If you made the mistake of installing iOS 9 and you are no longer satisfied with the decision, then I have already told you how you can downgrade iOS 9 to iOS 8.3 for your terminals, with the mention that you will not be able to use a backup made in iOS 9 and nor the notes if you have upgraded the application.
