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Security
Certificates
Digital certificates are used to identify your smartphone in secure network connections. You
require a certificate for VPN or WLAN connections for example, or for authentication with email
servers, browsers or other apps. Some certificates are already stored on your phone by default.
You can install further certificates.
Supported formats:
•
DER coded X.509 certificates with file extensions .CRT and .CER.
•
X.509 certificates in PKCS#12 keystore files with file extensions .P12 and .PFX. If you install a
certificate from a PKCS#12 keystore file, the corresponding private key certificates or
certification authority (CA) certificates are also installed.
Files with different file extensions cannot be installed. Change the file extension if required.
Managing certificates
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Settings
The installed certificates are displayed.
System:
Contains all certificates issued by a certification authority (CA) that are permanently
installed in the write-protected memory of your phone.
User:
Contains all CA certificates you have installed yourself, when installing a client
certificate for example.
If a certificate is corrupt or you do not trust a certificate, you can disable or delete it.
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Tap a certificate . . . Information on the certificate is displayed
System certificate:
User certificate:
Remove
reinstalled if required
Installing client and CA certificates
Install additional certificates from an SD card, internal storage, the Download folder or
Google Drive.
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Save a certificate or keystore file on one of the media mentioned above.
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Settings
Select the certificate location
Enter the keystore password
CA certificates upon which client certificates are based are also installed.
A display lock with high security level must be set (with PIN or password) if you want to
install certificates. You might be prompted to set a display lock (
56
Users – Security
Disable/Enable
OK
OK . . . The certificate is deleted permanently and needs to be
Users – Security
Tap the file name of the required certificate or keystore
OK
Enter the certificate name
Trusted credentials
Install from SD card
Scroll down
Open the
menu
OK
p. 52).
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