I have been unable to install iOS 15 beta on an iPhone 6S.
I first updated the device to iOS 14.6. I downloaded the iOS 15 Beta Software Profile and installed it. Under Settings > Software Update, I can see the beta.
Selecting "Install Now" shows "Verifying update..." for about 5 minutes and then a generic error. "Unable to Install Update". An error occurred installing iOS 15 Developer beta. Retry / Remind Me Later.
I looked at Console and didn't see any useful errors. The iOS developer beta is 4.66GB, and so my phone is currently at 14.3GB out of 16GB. Is this a disk space issue with an unhelpful error messages? Anything else I should try?