CD 400 Plus question

[phlyer]

Hey, just changed cars to a 2015 Astra J and it has a CD 400 Plus headunit.  A bit confused as to what this unit offers.....

1. The car has a shark fin aerial on the roof but I can't get DAB to work, only get AM & FM when I chose Radio on the unit... i'm guessing that means no DAB?
2. I have Bluetooth - phone functions work fine - however I can't get audio streaming to work, ie play music from the phone to the unit... Manual says to press AUX more than once to get into audio streaming mode, but it just says AUX mode nothing else, so again guessing even though I have Bluetooth it doesn't do audio streaming is that right?
3. Lastly, USB.... next to the accessory socket I have an AUX in socket but no USB connection so i'm guessing that means no USB?

I assumed being the CD 400 Plus (it says that on the front of the unit not just CD 400) that it had all these features....?

Cheers for your help.

My 2L CDTI SRI also has np USB, the AUX input can work if you link in with a 3.5mm male to male lead into your headphone on the phone.  I do play music off the phone tho via BT with no problems.

Im unhappiest at the sheer crappiness of the phone interface.   I have one phone connectivity and all i can do is answer incoming calls and redial last number.  Even my crappy Shitroen works van allows me to look and dial from the phones address book! (and that unit doesnt even have an on/off switch. It comes on with the IGN and you cant turn it off, only turn it down or switch it to a silent function like aux if you want quiet!!)    Very very dissapointed in this.  am looking to see if theres a decent upgrade for the phone that I can fit.    My 12 y/o Veccie that just died had DAB as std with a 6 CD changer from new.  I get no DAB, 1 CD and poxy BT.  VX have really really fkd up badly with this.