For customer demo, I am trying it and facing the issue as below,
just only iPhone 6S cannot make Intelligent Proximity connection with MX800.
iPhone 6S is running iOS 9.0.2(13A452), and MX800 is TC7.3.3.
tested pair:
iPhone 6S and MX800: failed
iPhone 6S and MX700: good
iPhone 6 and MX800: good
So, the issue can be seen only with the pair of 6S and MX800.
Checking with the tool SpectrumView, the 6S is getting 22KHz audio signal properly,
but is remained with searching status.
Does it work anywhere ?
Thanks,
Koji
