How to recover the lost voice memo after iphone4s synchronization?

1, here are the backup functions of iTunes and the methods to restore the backup:

2. First of all, everyone should understand that iTunes' backup of devices is completed automatically during the synchronization process. In other words, when you sync music, videos, ringtones, photos or applications to an iPhone or iPod device, iTunes also makes a detailed backup of the user's important data and system setting information. IPhone ITunes backup contains the following user information:

Address book (contact and group information);

Call records (received calls, missed calls, dialed calls);

Short message (receiving and sending);

Email (account configuration information);

Safari (favorites and settings);

Multimedia (MP3 music, MP4 video, M4r ringtone, playlist, directory location information of iPA application on PC);

Photos (the photos taken in the movie directory will be fully backed up, and the user gallery only backs up the directory information on the PC);

Network configuration information (Wi-Fi, cellular data network, VPN, Da 1L 1 service, etc.). );

Other configuration information (setting information of system function options, such as input method, system interface language, etc.). )

3. How can I confirm that iTunes has backed up my iPhone?

(1) This option page can be accessed through the top of iTunes-Edit Menu-Offset Settings-Devices.

These backup materials are undoubtedly the soul of iPhone for users. However, some users often ignore the powerful backup function of iTunes and use third-party software for backup. Not only will the effect be much worse, but there will also be compatibility problems between firmware versions. After the firmware of this backup is restored, iTunes will prompt the user to "set up the iPhone" and restore the iPhone from the backup. Moreover, if the local directory of the media files on the PC remains unchanged, the original media files will be synchronized to the iPhone after the backup is resumed, which is extremely convenient! Having said that, Bian Xiao also suggested that you set up a fixed media file storage directory on your hard disk, and put one more media file to be uploaded to the iPhone. Of course, you can also create multiple subdirectories, such as MP3, MP4, ringtone and gallery, to facilitate file classification. When you import iTunes, only files in this directory will be imported. Don't be afraid to waste your hard disk, it's only a dozen GB at most.

(2) The backups made by iTunes for users are stored in the folder "System Installation Drive: \Documents and Settings\ User Name \ Application Data \ Apple Computer \ Mobile Sync \ Backup" automatically generated by iTunes, ranging from 10MB to 30MB according to the general users. The backup of iTunes is a differential backup, covering the previous backup. Synchronizing iTunes frequently can keep this backup up to date. The name of this directory is a long string of letters and numbers generated by iTunes, such as "146ba07eb9b8270782e9fc3b21d252a 22b 7a49". You can copy this directory or compress it into a compressed file, and then save it in another drive or other storage device. In this way, if the computer system and iPhone system crash at the same time, there is no need to be afraid of losing user data. You only need to reinstall the system, install iTunes, and copy the backup directories such as "146ba07b8270782e9fc3b21d252a 22b7a49" to "System Installation Drive: \Documentsand Settings\ User Name \ Application Data \ Apple Computer \ Mobile Sync \ Backup". Then restore the firmware. When the iPhone restarts, you will see iTunes prompting you to restore from the following backup, which is a complete backup of the iPhone you copied before.

4. If the above prompt of restoring from backup does not appear after restoring the firmware, you can also right-click the name of the iPhone device, and then a backup and recovery menu will pop up (see the figure below), and then you can choose to restore from backup or backup again.

5. Finally, once again remind everyone that before restoring the firmware, please look at the last backup time of iTunes. If the backup time is early, please sync iTunes again before restoring the firmware to keep the backup up to date.