Operation Manual

Working with certificates
Use client and Certificate Authority (CA) digital certificates to enable
HTC Desire 516c dual sim to access VPN or secured Wi-FI networks, and also to
provide authentication to online secure servers. You can get a certificate from your
system administrator or download it from sites that require authentication.
Some apps such as your browser or email client let you install certificates directly in
the app. See the app's help for details.
Installing a digital certificate
You must set a lock screen PIN or password before installing a digital certificate.
1. Save the certificate file in the root folder on HTC Desire 516c dual sim.
2. Go to Settings.
3. Tap Security > Install from SD card.
4. If you have more than one certificate in the root folder, select the certificate you
want to install.
5. Enter a name for the certificate and tap OK.
Assigning a PIN to the UIM or SIM card
You can help to protect the UIM or SIM card by assigning a Personal Identification
Number (PIN).
Make sure you have the default PIN provided by your mobile operator before
continuing.
1. Go to Settings, and then tap Security.
2. Tap Set up UIM/SIM card lock.
3. Select which card you want to assign a new PIN to.
4. Choose to lock the card, enter the default PIN of the card, and then tap OK.
5. To change the card PIN, tap Change UIM PIN or Change SIM PIN.
84 Settings and security