{{{{{Welcome}}}}} brought next idea :
> Thus spaketh Timberman:
>> (Sorry if this comes up twice..the first attempt didn't seem to
>> appear)
>>
>> Is it possible for a text message to be unread in the inbox, but with
>> no 'you have a new text message' showing on the main window? I'll
>> explain the scenario...
>>
>> My girlfriend found a text on my phone that I hadn't read. It was from
>> a female work colleague and was meant as a joke. I, truthfully, denied
>> having seen it, and g/f says I must have, so I am lying.
>>
>> I seem to remember it happening in the past that if there are two
>> texts waiting to be read there is a message 'you have 2 new text
>> messages', and that if I read only one of them, the message doesn't
>> come back with 'you have one new message.' (although it does show as
>> unread in the inbox, which with my eyesight I could miss anyway!)
>>
>
> This is how they work on all my phones, even if there are 3, 4, 5 new
> messages, once you press the button to look at one of them, the rest remain
> unread in the in box and the "You have new messages" message disappears, even
> if you didn't read all of them.

Although the envelope icon remains visible. The next new message that
arrives would yield the "You have x new messages" again, where x would
equal previously unread messages plus new message.