SPP connection between iPhone and other device

I am developer of car radio. We have finished SPP application in Andriod mobile.
But I couldn't find iPhone start SPP connection request to our car radio.
I wonder whether SPP connection has been start from other device such as our car radio?
Does any person has related experience to share how it works?
Thanks

Yes that is what I observed.
There have been other strange things going on with Mail on both the iPhone and the iMac so I wouldn't be at all surprised if this was one of them, but still I thought I might get a hint on this problem.

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