LG K120 User Manual page 100

You should first check the software version on your device: Settings >
About phone > Update Center > Software Update > Update now.
NOTE
Your personal data from internal device 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 device's software. Therefore, LG recommends that
you backup your personal data before updating your device's software. LG does
not take responsibility for any loss of personal data.
This feature depends on your network service provider, region and country.
Appendix 99