Memory card not formatted followed by operation failed is displayed when i try t open the memory card of my phone,,,,,,what can be done to recover data from it?????

Have you formatted this memory card?
I hope you've not formatted it yet, since the formatting process always makes things worse.
Here are some ways for you to save back your inner data and this memory card:
1). Do not format this memory card till you've saved all your stored data back.
2). Do not add any new file on this memory card in case that anything new would rewrite your original data.
3). Do not randomly select a data recovery program. In your case, an efficient data recovery program always means a lot. Therefore, you can try to apply an unformatted memory card data recovery freeware to get back your player data successfully:
http://blog4mark.blogspot.com/2013/01/unformat-memory-card.html
4). Do not save the restored data on the same memory card in case of data recovery failure.
5). Do not forget to format this memory card after the data recovery process so that you can check whether this "not formatted error" problem could be resolved.
Note: Never try to save everything important on only one hard drive or memory card next time.

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