【Unity×iOS】アプリから「設定」アプリを開く方法｜通知やBluetooth誘導に便利な実装ガイド

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

extern "C" {
    void OpenAppSettings() {
        NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
        if ([[UIApplication sharedApplication] canOpenURL:url]) {
            [[UIApplication sharedApplication] openURL:url options:@{} completionHandler:nil];
        }
    }
}

using System.Runtime.InteropServices;
using UnityEngine;

public class OpenSettings : MonoBehaviour
{
#if UNITY_IOS && !UNITY_EDITOR
    [DllImport("__Internal")]
    private static extern void OpenAppSettings();
#endif

    public void OpenSettingsApp()
    {
#if UNITY_IOS && !UNITY_EDITOR
        OpenAppSettings();
#else
        Debug.Log("iOSでのみ動作します。");
#endif
    }
}