Originally Posted by ChrisB1
Thanks for your reply, I suspect the bug is not related to the phone, more to do with how the phone book is displayed by the vehicle. Not much we can do about that I wouldn't think.
I have totally no knowledge on the topic, but two days ago I was pairing my
S2 and iphone with my friend's new Volvo, and it had the same problem.
The iphone pair without issue, because its phone book is very straight forward, but the S2 had the same issue as said above.
So my guess is, that the car simply doesn't understand the "Merged" phone book trick. I don't believe Android physically combine the contacts into one, I believe it's still a separate entry, simply grouped temporary by software, on the device only, for your convenience.
Once I took my time and organized them in my Google account, copy paste the e-mails and second or 3rd numbers under the same name, creating one, rich contact with all its info, it display them normally. Don't think there is any other phone that does it right now, so the car has no clue what merged contact is, it just reads the entry from the phone and display them. I wouldn't call it a bug, more like not very common android feature.
The merged contacts are also problematic during transfer/migration from phone to phone. Right now Google is my contacts main Hub, while the phone is delivery tool that serves them. I keep them organized into single contact as soon as I see there is one ready to be merged. And they all work well across all kind of media.