All iPhones and iPads (6s, 7, iPad Pro, iPad Air, various OS 11.xx) work with Envaya mini. But don't forget: press the >|| button before pairing for the first time.

I have no problems connecting the two devices with the iPhone 6, you only have to search for the speakers under Settings - Bluetooth and connect them, that's all it takes.

Yes. At least it works perfectly for us.