After upgrading to IOS 18 Developer Beta, not able to open & using Screen Time option. The device getting hang.
Bug in IOS 18 Developer Beta version
There is an issue with Screen Time in the iOS 18 betas.
Please raise bugs with Apple - and not in these forums. The Developer Forums aren't really the right place to raise bugs in a new version of an OS. Apple's engineers aren't reading through these pages to see if anyone's found a bug.
These forums are for third-party developers writing apps for Apple's platforms to discuss issues with their code.
You need to raise each issue you find separately at https://www.apple.com/feedback/ You can post the FB numbers here if you want, so that others can link to them.
Others have already raised this particular issue, but your report might contain the pertinent information that will help Apple fix the bug.
Thanks so much for posting the issue! To greatly aid other developers in finding and resolving this problem, would you mind also posting the steps to reproduce it, the hang file (if any), and screenshots? Providing these details will make your post incredibly comprehensive and useful.
Also, due Xcode 16 is still in beta, I would also ask you to please submit a complete bug report regarding this issue using Feedback Assistant (https://feedbackassistant.apple.com). For more information on Feedback Assistant, please visit https://developer.apple.com/bug-reporting.
Our engineering teams need to investigate this issue, as resolution may involve changes to Apple's software. Post the FB number here once you do. Bug Reporting: How and Why? has tips on creating your bug report.