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that the voice service is activated and that it is possible to make phone
calls.
If the PIN is incorrect, you will hear the “PIN required” tone again.
Repeat step 2.
Note: If three attempts have been made with an incorrect PIN, the SIM
card is blocked and you will hear a new tone, indicating that the
PUK is required to unblock the SIM card.
To unblock the SIM card, dial the following sequence:
* <PUK> * <new PIN> * <new PIN> #
If the PUK is correct and the new PIN codes agree, you will hear the normal
dial tone, which indicates that the voice service is activated and that it is
possible to make phone calls. Remember the new PIN for future use.
If the PUK is incorrect or the new PIN codes do not agree, you will hear the
“PUK required” tone again. Repeat the “unblock SIM card” sequence
above.
Note: If ten attempts have been made with an incorrect PUK, the SIM
card is permanently blocked and a new SIM card is required.
Contact your service provider.
3.2 Information Tones
The Ericsson W25 generates information tones in your telephone handset,
thus providing the same characteristics as the one given by the traditional
fixed line network.
The following table describes the nature of the unique information tones
you will get when using the Ericsson W25.
Table 3 - Information Tones
Name Nature Description
SIM authentication is
required to enable the voice
service.
PIN required ––––– 50 ––––– 50
200 200
Repeating 200 ms tone
at regular 50 ms
intervals.
The SIM card is blocked.
The PUK and a new PIN are
PUK required –– 50 –– 50
50 50
8 5/1551-CRH 102 167 Uen Rev E 2008-02-15