LG G4 User Manual page 80

NOTE: Your personal data from internal phone storage—including
information about your Google account and any other accounts, your
system/application data and settings, any downloaded applications and
your DRM licence—might be lost in the process of updating your phone's
software. Therefore, LG recommends that you backup your personal data
before updating your phone's software. LG does not take responsibility for
any loss of personal data.
NOTE: This feature depends on your network service provider, region and
country.
Notice: Open Source Software
To obtain the source code under GPL, LGPL, MPL, and other open source
licenses, that is contained in this product, please visit
http://opensource.lge.com.
In addition to the source code, all referred license terms, warranty disclaimers
and copyright notices are available for download.
LG Electronics will also provide open source code to you on CD-ROM for a
charge covering the cost of performing such distribution (such as the cost of
media, shipping, and handling) upon email request to opensource@lge.com.
This offer is valid for three (3) years from the date on which you purchased the
product.
Phone software update
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