 
Message counter
Message counter shows the number of sent and received text messages, and the 
details of each message. Selecting 
Clear counters
allows you to clear the counter
for sent and received messages.
To view message details select
Menu
>
Messages
>
Text messages
>
Message
counter
>
Sent messages
or
Received messages
.
To clear the message counters, select
Menu
>
Messages
>
Text messages
>
Message counter
>
Clear counters
.