LG L39C User Manual page 34

Working With Secure Certificates
you must obtain the certificates and store them in your phone's secure
network on your phone.
For specific instructions, contact your network administrator.
To install a secure certificate from the microSD card
1.
2. From the Home screen, touch the Menu Key
3. Settings
4. Install from SD card.
5.
Only the names of certificates that you have not already installed on your
phone are displayed.
6.
7.
> Location & security.
.
OK.
OK.