How can I install iOS 15 and above as a beta profile on iPhone 6?

beta profile ios 15iOS 15 is the next version of Apple's mobile operating system for iPhone and iPad and will be launched on JuneLearn how to download and install iOS 15 beta 1 using an iOS 15 confuration profile without a developer account or a computer. iOS 15 is Apple's most advanced operating system with new features and improvements.