The iPhone, like other smartphones, stores programs, data and other information in memory that is accessed by the operating system. Deleting an item, for example, an application or a text message, from the iPhone removes it entirely from memory. To recover an item deleted from the iPhone, sync it with the free iTunes syncing program that is used to place items on Apple's smartphone in the first place. The item will be recovered to the iPhone once the syncing is finished and can once again be used by the smartphone's operating system.
Connect the proprietary connector that is at one end of the iPhone cable into the connection on the bottom of the iPhone. Connect the USB connector on the other end of the iPhone cable into a USB port on the computer.
Launch the iTunes program by selecting it from the "Start" > "All Programs" popup menu.
Click the icon of the iPhone that appears in the left column of iTunes, under the "Devices" tab.
Click the "Summary" tab at the top of the iTunes program's main screen. Click the "Not Now" button in the update popup window if it appears.
Click the "Sync" button at the bottom of the iTunes program. Right-click the icon of the iPhone beneath "Devices" once the panel at the top of the program states that the sync is done.
Select "Eject" from the popup menu. Quit iTunes. Remove the iPhone cable from the iPhone and from the USB port of the computer.
Do not make any changes to the iTunes program prior to syncing it with the iPhone in order to recover an item that has been deleted.