Nokia Lumia 920 Manual page 38

If your device has WMDRM-protected content, both the
licenses and the content are lost if the device memory is
formatted. You may also lose the licenses and the content
if the files on your device become corrupted. Losing the
licenses or the content may limit your ability to use the
same content on your device again. For more info, contact
your service provider.
Windows Phone software license terms
The software in this device includes software licensed by
Nokia from Microsoft Corporation or its affiliates. To
access the Windows Phone software license terms, select
Settings > about . Please read the terms. Please note
that by using the software, you accept the terms. If you
do not accept the terms, do not use the device or
software. Instead contact Nokia or the party from which
you purchased the device to determine its return policy.
Battery and charger info
Your device has an internal, non-removable, rechargeable
battery. Do not attempt to remove the battery, as you
may damage the device. To replace the battery, take the
device to the nearest authorized service facility.
Charge your device with AC-16U or AC-50U charger.
Third-party chargers that comply with the IEC/EN 62684
standard, and that can connect to your device micro USB
connector, may also be compatible.
The battery can be charged and discharged hundreds of
times, but it will eventually wear out. When the talk and
standby times are noticeably shorter than normal, to
replace the battery, take the device to the nearest
authorized service facility.
Battery safety
Note: The battery in your device is non-removable, so
refer to the battery-related statements as applicable to
your device.
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