The Cala 8 with an iPhone also supports using the iPhone as a mic. Just put the phone in live mic mode and put it near the speaker. I’ve only tried it briefly with my KS6 aids and again then I was trialing the Cala 8.
Phonak also offers a mini or micro mic that works with the ComPilot II. I have one but have never used it. It was a free accessory with my Brio aids.