The day I bought my iPhone 5s i connected it to my laptop. I synced all my songs. After a few days i wanted to put some more songs in it, so i connected it to my laptop. And the next thing i saw that all my songs got deleted from my iPhone playlist. Now, when i am trying to sync it again the process goes through the motion but nothing transfers. And there are also no error messages. So please can anyone suggest me something. It's really frustrating.