Are there any registration fees or monthly subscription charge for IDD 001 and IDD 019? Admin August 16, 2019 03:53 Updated Follow Nope, there are no registration fees or monthly subscription charge. IDD calls are charged per min block. Related articles What is the difference between IDD 001 and IDD 019? Where can I refer to the rates for IDD services? What IDD services are available for Grid Mobile customers? How are IDD calls charged? Will my IDD usages be reflected on my bills? Comments 0 comments Please sign in to leave a comment.