Settings And Security; Assigning A Pin To A Nano Sim Card; Airplane Mode - HTC Desire 820 User Manual

151 Settings and security

Settings and security

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.
Restoring a nano SIM card that has been locked out
If you enter the wrong PIN more times than the maximum number of attempts
allowed, the card will become "PUK-locked."
You need a Pin Unlock Key (PUK) code to restore access to HTC Desire 820. Contact
your mobile operator for this code.
1. On the Phone dialer screen, enter the PUK code, and then tap Next.
2. Enter the new PIN you want to use, and then tap Next.
3. Enter the new PIN again, and then tap OK.

Airplane mode

When you enable Airplane (Flight) mode, all wireless radios on HTC Desire 820 are
turned off, including the call function, data services, Bluetooth, and Wi-Fi.
When you disable Airplane mode, the call function is turned back on and the previous
state of Bluetooth and Wi-Fi is restored.
ƒ You can manually turn Bluetooth and Wi-Fi back on after enabling Airplane
mode.
ƒ If USB tethering is turned on, enabling Airplane mode turns it off. You need to
manually turn USB tethering on after you disable Airplane mode.
Do any of the following to turn Airplane mode on or off:
ƒ Press and hold POWER, and then tap Airplane mode.
ƒ With two fingers, swipe down from the status bar to open the Quick
Settings panel. Tap the Airplane mode tile to turn airplane mode on or off.