Combined both of your solutions and rewritten to QT6:

                QJniObject activity = QJniObject::callStaticObjectMethod("org/qtproject/qt/android/QtNative", "activity", "()Landroid/app/Activity;");
            if (activity.isValid()) {
                QJniObject param = QJniObject::fromString("package:com.filmtoro.appMobile");
                // Equivalent to Jave code: 'Uri uri = Uri::parse("...");'
                QJniObject uri = QJniObject::callStaticObjectMethod("android/net/Uri", "parse", "(Ljava/lang/String;)Landroid/net/Uri;", param.object<jstring>());
                if (!uri.isValid()) {
                    qWarning("Unable to create Uri object");
                    return;
                }
                QJniObject packageName = QJniObject::fromString("android.settings.APPLICATION_DETAILS_SETTINGS");

                QJniObject intent("android/content/Intent","(Ljava/lang/String;)V", packageName.object<jstring>());
                if (!intent.isValid()) {
                    qWarning("Unable to create Intent object");
                    return;
                }
                intent.callObjectMethod("addCategory", "(Ljava/lang/String;)Landroid/content/Intent;", QJniObject::fromString("android.intent.category.DEFAULT").object<jstring>());
                intent.callObjectMethod("setData", "(Landroid/net/Uri;)Landroid/content/Intent;", uri.object<jobject>());

                QtAndroidPrivate::startActivity(intent.object<jobject>(), 10101);
            }

tho I wander if there is an possibility to access directly permission page of specific permission, ie: i want to get into app permissions/Camera permission