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Security
Gigaset GS4 / LUG AU-IE-UK-International en / A31008-N1520-R101-1-QD19 / settings.fm / 12/10/20
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Device administrators
Device administrators are apps authorised to create a connection to your smartphone and to
exchange data, for synchronisation for example. You can authorise this by setting up an account
hosted by a business service, such as for an email, calendar or business app.
Settings
Security
Device admin apps
. . . A list of device administrators is
displayed Use the switch to enable apps to be permitted as device administrators
Displaying device administrator information:
Tap Service in the list
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
Settings
Security
Encryption & credentials
Trusted credentials
The installed certificates are displayed.
You can also install the Android Device Manager on mobile devices, such as your
smartphone or a tablet (downloaded from Google Play).
If you disable a device administrator, you revoke the permission of associated
services to synchronise data on your phone.
Google services (Gmail, contacts, calendar, etc.) are not treated as device
administrators. Permissions for these services to make changes on the smartphone
are managed from the Google account settings.
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.
