Nokia E72 - Manual (Page 9)

If your device has OMA DRM-protected content, to back up
both the license and the content, use the backup feature
of Nokia Ovi Suite.
Other transfer methods may not transfer the licenses
which need to be restored with the content for you to be
able to continue the use of OMA DRM-protected content
after the device memory is formatted. You may also need
to restore the license in case the files on your device get
corrupted.
If your device has WMDRM-protected content, both the
license and the content will be lost if the device memory
is formatted. You may also lose the license and the content
if the files on your device get corrupted. Losing the license
or the content may limit your ability to use the same
content on your device again. For more information,
contact your service provider.
Some licenses may be connected to a specific SIM card, and
the protected content can be accessed only if the SIM card
is inserted in the device.
Battery removing
Switch the device off and disconnect the charger before
removing the battery.
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