Panasonic GD87 - Manual (Page 45)

Messages
This phone has various messaging features including SMS, MMS and E-mail:
SMS: You can enter the recipient’s phone number to send text.
MMS: You can attach images and music to text messages. The recipient can play it as a Slide show.
E-Mail: You can enter an e-mail address to send a message to another mobile phone or a PC via the Internet.
SMS
It is possible to receive, display, edit and/or send text messages
of up to 459 characters (dependent upon the language being
used) to mobile phones on your service provider’s network or
any network that has a roaming agreement (dependent on the
recipient’s phone parameters.)
Phone Setup for SMS
Before a message can be sent, it is necessary to enter the
Message Centre number into Parameters.
The Message Centre number may have been preprogrammed
on the SIM.
Setting the Message Centre Number
From Idle mode:
Messages
47
Messages
Messages >
SMS >
Parameters >
Message Centre
Enter message centre number in
international dial format (see
‘International Dialling’)
x 2