Thanks Rcshnoor, i didn't have an iTunes backup...i will do from now, but i had 100 music files that went missing, not sure if they are still somewhere in the iPhone
If they are still somewhere on the iPhone, it may be best to connect the phone to the computer you plan to sync with iTunes. That way they would hopefully transfer to the computer and then you would be able to sync them back to the phone.
If they are NOT still somewhere on the iPhone, you are most likely out of luck.
To restore text messages information from a backup, use one of the following methods after connecting your iOS device to the computer with which you normally sync:
1. Right-click (or Control-click) the device and choose Restore from Backup
2. If you have a new phone, you can connect to iTunes and it will prompt to restore from your backup.
For more detailed guide of recovering iPhone files, follow this tip "recover deleted sms messages from iPhone".
Watch video demo: