Thanks, Jason and Joe.
Sony sent me the definitive answer to this question.
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Thank you for contacting Sony Support.
I'm glad to provide the information about connecting iPhone to the unit. As per the information available online *iPhone 3 G is not compatible with the unit*. I suggest that you refer 2 in the manual for the unit to view the information about compatible iPod models. You can view, save and/or print the manual and other supplied documentation from our website at:
https://www.docs.sony.com
If you experience difficulties please visit:
http://www.kb.sony.com/selfservice/documentLink.do?externalId=C257998
Thank you for choosing Sony.
The Sony Email Response Team
C6UU
Eric
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There's the answer, but I still don't know why the charging icon comes on or why I don't get some kind of incompatibility warning. Oh, well, my disappointment with Sony deepens even further.