Version 4.1 I think it is?

And all the numbers I think are just 04 none I can see are +61 but they are just at random and only about 5 numbers at the most?

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[COLOR="black"][COLOR="black"]UNDR8TD now for sale[/COLOR][/COLOR]
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Happened to my partner's Iphone3gs the other day, exact same problem. Off / On fixed it.
I give the phone the benefit of the doubt, it hadn't been turned off in months, also hasn't had any of the OS updates done.

I tell you what Damo.... My 3GS doesn't have any problems like that. So we can swap. I'll reluctantly take your 4.0 off you, and give u my 100% working 3GS. I like to play guessing games with who is sms'ing me anyway.

Hey many messages have you got in your inbox? Maybe its gone over its memory. I know its not an iphone but my n95 after 2k worth of sms and mms it decides to not remember names and show numbers so i have to delete them all. Just a thought, it probably wont work