HTC One E8 - Manual (Page 174)

Installing a digital certificate
Use client and Certificate Authority (CA) digital certificates to enable HTC One (E8) 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.
§ You must set a lock screen PIN or password before installing a digital certificate.
§ Some apps such as your browser or email client let you install certificates directly in the app. See
the app's help for details.
1. Save the certificate file in the root folder on HTC One (E8).
2. Go to Settings, and then tap Security.
3. Tap Install from storage.
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.
Disabling an app
Apps, even if not used often, may be running in the background and downloading data. If an app
cannot be uninstalled, you can disable it.
1. Go to Settings, and then tap Apps.
2. Swipe to the All tab.
3. Tap the app, and then tap Disable.
Assigning a PIN to a nano SIM card
You can help to protect the nano 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 SIM card lock.
3. Choose to lock the card, enter the default PIN of the card, and then tap OK.
4. To change the card PIN, tap Change SIM PIN.
174 Settings and security