Nokia 5140 - Manual (Page 61)

16. SIM services
In addition to the functions available on the phone, your SIM card may provide additional network services that you can
access in this menu, which is shown only if supported by your SIM card. The name and contents of the menu depend on the
available service.
To set the phone to display the confirmation messages sent between your phone and the network when you use SIM
services, press
Menu , and select Settings → Phone settings → Confirm SIM service actions → Yes .
Note that accessing these services may involve sending a text message (SMS) or making a phone call for which you may be
charged.
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