Nokia 6136 - Manual (Page 110)

S I M s e r v i c e s
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17. SIM services
Your SIM card may provide additional services that you can access.
This menu is shown only if it is supported by your SIM card. The name
and contents of the menu depend on the SIM card.
For availability, rates, and information on using SIM services,
contact your service provider.
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 service actions > Yes . This option is shown only if supported
by your SIM card.
To access these services, it may be necessary to send messages or make a phone
call for which you may be charged.