I think Nokia Diagnostics is very handy and it's good that Nokia brings it app.
But what I don't like, is that is not for the Nokia S60v3 FP1 phones. In my opinion it seem
as if Nokia brings out all kind of new handy- cool stuff but not for the S60 FP1 what
oblige you, to buy a new Nokia phone.

- What do you think. Should Nokia support more for the S60 FP1 or are we all moved on
to S60 FP2?

" Nokia Diagnostics makes it easy to diagnose and troubleshoot situations on the mobile phone by running various tests on the phone, including:

* Network Coverage test
* Internet connectivity test
* Battery charger test
* Loudspeaker &
* Earpiece test

-Today we are happy to announce the release of Nokia Diagnostics for S60 3rd Edition Feature Pack 2 devices. The application is essentially the same as the touch version but now works with a lot more Symbian devices. We do recommend you to check that your device is running the latest software before trying it out since some older device software versions can potentially cause undesirable behaviour.

This beta release has been tested with:

Nokia 5320 XpressMusic, Nokia 5630 XpressMusic, Nokia 5730 XpressMusic,Nokia 6210 Navigator, Nokia 6220 classic, Nokia 6650 fold, Nokia 6700 slide,Nokia 6710 Navigator, Nokia 6720 classic, Nokia 6730 classic,Nokia 6760 slide, Nokia 6788, Nokia 6790 slide, Nokia 6790 Surge,Nokia C5-00, Nokia E52, Nokia E55, Nokia E71x, Nokia E72, Nokia E75,Nokia N78, Nokia N79, Nokia N85, Nokia N86 8MP, Nokia N96, Nokia N96-3

(from: http://www.dailymobile.net/2010/03/1...ack-2-devices/ )