I had a Parrot Minikit Slim for about 4 years, and when it 'gave up the ghost' I thought I'd replace it with the Minikit Smart. Oh dear! For a start, the microphone quality is truly appalling. To callers I sound like I am either under water or turning into a dalek. Compared to the Minikit Slim this unit is virtually unusable. I have tried re-siting the microphone but it made little difference.
Secondly, the phone I am using (HTC One) which the Parrot website says is fully compatible, does not function correctly when linked to the unit. The Minikit Smart has a 'power-through' facility whereby the phone can be charged from a USB socket using the supplied cable. Unfortunately, my phone (like many modern units) uses MTP (media transfer protocol) which means that if the provided data lead is connected the charge rate is reduced. The effect of this is that I cannot use satnav on my phone as the discharge rate is greater than the charge rate, so the battery drains in a couple of hours - not good if I'm on a long journey! I contacted Parrot about this, but they were less than helpful.
Have returned it for a refund, and will buy an HTC V100 bluetooth speaker instead.