have not added any, select Add; otherwise, select Options > 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.

 

Security

 

When security features that restrict calls are in use (such

 

as call barring, closed user group, and fixed dialing), calls

 

may be possible to the official emergency number

 

programmed into your device.

 

Select Menu > Settings > Security and from the

 

following options:

 

PIN code request and UPIN code request — to set

 

the device to ask for your PIN or UPIN code every time

 

the device is switched on. Some SIM cards do not allow

 

the code request to be turned off.

 

PIN2 code request — to select whether the PIN2 code

 

is required when using a specific device feature which

 

is protected by the PIN2 code. Some SIM cards do not

 

allow the code request to be turned off.

 

Call barring service — to restrict incoming calls to and

 

outgoing calls from your device (network service). A

 

barring password is required.

 

Fixed dialling — 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

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recipient’s phone number and the message center

number must be included in the fixed dialing list.

Closed user group — to specify a group of people whom you can call and who can call you (network service)

Security level — Select Phone to set the device to ask for the security code whenever a new SIM card is inserted into the device. If you select Memory, the device 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, UPIN code, PIN2 code, or barring password

Code in use — to select whether the PIN code or UPIN code should be active

Authority certificates or User certificates — to view the list of the authority or user certificates downloaded into your device. See "Certificates," p. 70.

Security module sett. — to view Secur. module details, activate Module PIN request, or change the module PIN and signing PIN. See "Access

codes," p. 14.

Software updates over the air

Warning: If you install a software update, you cannot use the device, even to make emergency calls, until the installation is completed and the device is restarted. Be sure to back up data before accepting installation of an update.

Your service provider may send device software updates over the air directly to your device (network service). This option may not be available, depending on your device.

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Nokia 7500 Prism manual Security, Software updates over the air