I Cannot Send Text Messages (Sms); I Cannot Use Internet Or Mms; What Do These Error Messages Mean - Sony Ericsson T280I User Manual

I cannot send text messages (SMS)

Make sure you have a valid service centre number
in your phone.
1 From standby select
Text message
if it is saved on the SIM card.
2 If there is no number shown, enter the service centre
number, including the international "+" sign and
country code.
3 Select OK.

I cannot use Internet or MMS

Make sure you have a phone subscription that supports
data transmission, and also the correct settings in your
phone.

What do these error messages mean?

PIN blocked
You have entered the wrong PIN code three times. Your
SIM is now locked. Unlock your SIM with your PUK code,
which is provided together with your PIN code by your
network operator.
1 Enter your PUK code and select OK.
2 Enter a new PIN and select OK.
3 Re-enter the new PIN to confirm and select OK.
This is the Internet version of the User's guide. © Print only for private use. This is the Internet version of the User's guide. © Print only for private use.
Menu
> Service centre. The number is shown
> Messaging > Settings >
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