Security; Reset Device - Nokia 6750 Guia Del Usuario

Add new. Select the service type, and select and enter each of the required
parameters. The parameters differ according to the selected service type. To delete
or activate a personal account, scroll to it, and select Options > Delete or
Activate.
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Security

When security features that restrict calls are in use (such as call restriction and
fixed dialing) calls still may be possible to the official emergency number
programmed into your device.
Select Menu > Settings > Security, and from the following:
PIN code request — to set the phone to ask for your PIN code every time the phone
is switched on. Some SIM cards do not allow the code request to be turned off.
Fixed dialing — to restrict your outgoing calls to selected phone numbers if this
function is supported by your SIM card. When the fixed dialing is on, GPRS
connections are not possible except while sending text messages over a GPRS
connection. In this case, the recipient's phone number and the message center
number must be included in the fixed dialing list.
Security level — to set the phone to ask for the security code whenever a new SIM
card is inserted into the phone, select Phone. If you select Memory, the phone asks
for the security code when the SIM card memory is selected, and you want to
change the memory in use
Access codes — to change the security code, PIN code, or PIN2 code
Code in use — to select whether the PIN code should be active
PIN2 code request — to select whether the PIN2 code is required when using a
specific phone feature which is protected by the PIN2 code. Some SIM cards do
not allow the code request to be turned off.
Authority certificates — to view the list of the authority certificates downloaded
to your phone. Contact AT&T for more information.
User certificates — to view the list of the user certificates downloaded to your
phone. Contact AT&T for more information.
Security module sett.— to view Secur. module details, select Module PIN request,
or change the module PIN and signing PIN. See also "Access codes" on page 8.
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Reset device

To reset some of the menu settings to their original values, select Menu >
Settings > Reset device. Select Restore settings only to prevent personal data
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