I was wondering that very same thing. This is the email I sent to HTC:
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I own an HTC Imagio, which has worked well for me for 5 months, until one of the buttons stopped clicking. I got it repaired, as it was within warranty, so the issue is gone for now, but this made me look into this issue more. It turns out that the Imagio has a very big problem with buttons stopping working. In an ongoing poll at PPCGeeks.com, more than half of all phones have already failed. Did you hear that? A failure rate of >50%!!!! That is utterly ridiculous. So my question is this: how are you going to treat your customers once the 1 year warranty is up?
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This is the response I got:
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Thank you for contacting HTC regarding your Imagio.
I understand how important it is to ensure that your device functions properly. I am glad to hear that your device has been repaired and is working properly. For more information regarding the warranty and any additional warranties since the repair of the device please contact our repair center at 800-229-1235. Their hours of operation are 8am-5pm EST Mon-Fri. Our repair center will be able to give you specific information regarding your warranty.
If you have any other questions feel free to reply. You may also enjoy our You Club located at
http://www.htc.com/us/community/. The You Club hosts our customer-based forum, which has a plethora of information on HTC devices. I would also like to invite you to participate in a customer satisfaction survey located at
http://survey.htc.com/worldwide/. I hope you have a great day!
HTC Technical Support
Sam
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So basically, online tech support was useless. Best bet its probably phoning and getting someone to answer personally.