User Manual

SIM services
79
Digital signature
You can make digital signatures with your phone if your SIM card has a security
module. Using the digital signature can be the same as signing your name to a
paper bill, contract, or other document.
To make a digital signature, select a link on a page, for example, the title of the
book you want to buy and its price. The text to sign, which may include the
amount and date, is shown.
Check that the header text is Read and that the digital signature icon ( ) is
shown.
If the digital signature icon does not appear, there is a security breach, and you
should not enter any personal data such as your signing PIN.
To sign the text, read all of the text first, and select Sign.
The text may not fit within a single screen. Therefore, make sure to scroll through
and read all of the text before signing.
Select the user certificate you want to use. Enter the signing PIN (see Access
codes
p. 8), and select OK. The digital signature icon disappears, and the service
may display a confirmation of your purchase.
15. SIM services
Your SIM card may provide additional services. You can access
this menu only if it is supported by your SIM card. The name and contents of the
menu depend on the available services.
For availability and information on using SIM card services, contact your SIM
card vendor. This may be the service provider, network operator, or other vendor.
To set the phone to show you the confirmation messages sent between your
phone and the network when you are using the SIM services, select Menu >
Settings > Phone > Confirm SIM serv. actions > Yes.
Accessing these services may involve sending messages or making a phone call
for which you may be charged.