Can I use -openURL: API with options to open general settings?
No. See this post for my general advice on this front.
And also how can we request iOS API team to provide such support in
future as this is so many time generated request.
You can file an enhancement request. Make sure to include a detailed explanation of why you need to do this.
Please post your bug number, just for the record.
But, just to set expectations here, you are correct in observing that this is a long-requested feature, and so the fact that it still not possible suggests that iOS engineering has reasons for not doing it. I don’t think Apple has ever explained those reasons, and I’m not going to speculate here.
Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"