関連ワード:  use mobile data while on call iphone    use mobile data while on call    cannot use mobile data while on call    cannot use mobile data while on call iphone    can t use mobile data while on call    can i use mobile data while on call    can t use mobile data while on call iphone    unable to use mobile data while on call iphone    can t use mobile data while on call samsung    can t use mobile data while on call vodafone