If the issues you mentioned are indeed caused by iOS, it's likely that numerous users who have upgraded to iOS 16.4.1 (a) are experiencing similar problems. However, in order for the community on this forum to provide helpful responses, it would be beneficial for you to specify the nature of the issue you are encountering. Without this information, it may be difficult for others to address your concern effectively.

If your display has turned green that surely is not due to the iOS update.
If you have either dropped the device accidentally or exposed it to liquid or used it beyond acceptable temperature limits then you can get it repaired by paying the service fee in any Apple Authorised service centre, you may not be able to claim warranty.


Take your device to an Apple Retail Store or Apple Authorized Service Provider, or contact Apple Support:
Find Locations - Location Selector - Apple
Contact Apple for support and service - Apple Support

