iCloud Keychain turns off after phone restart
Hi. I am running ios15 on iphone 12 pro. I am facing an issue with the iCloud Keychain where it turns off and not able to turn back on. If i signout of my iCloud account and sign back in. The keychain gets enabled and all passwords stored in keychain are synced but if i restart the phone, the keychain turns back off and will not turn on. I have an ipad pro on ios15 using the same apple id and this issue is not seen on the ipad.
iPhone 12 Pro Max, iOS 15