I've had the HD for about 6 weeks and I thought
I'd got the hang of it. However, I have one problem which exists I can't find the answer to.
When I receive a text from someone I get the notification sound, it shows when I look on the Notification Panel, and a figure "1" is on the Messages icon. Once I've read that message I suspect I do what most users do and don't delete it straight away. If the same sender sends me another message, the message arrives, still shows on the Notification Panel, the "1" is on the Messages icon..... but no sound to tell me it's arrived. Any further texts from the same individual, usually of the type asking why I've not replied, also doesn't give me a Notification sound. This means I only see I've got texts when I look on the off-chance of having received one.
However........if I delete all the read messages from the same person and then they text me, I get the notification sound, as I should.
This fault does not just occur with one individual contact.
Is there some area of the phone I've not investigated which would sort my problem out?