[Android Head-Units] kaween:
More or less.

* Rooting and using Torque/OBD have nothing to do with each other. It is perfectly possible to have Torque running using a BT-OBD, as long as your unit comes with the BC6 BT board. But other than for example the old OUKU device where a USB dongle and a piece of extra software allowed running the OBD-BT bridge, I've never been able to do that with the AN21 simply because I couldn't find a USB-BT dongle that was accepted by the AN21-U.

So : you want OBD support ? Ask for a BC6 BT board to be build in. If you seller doesn't understand that or doesn't want to do so, go look for another seller.

Again, you do NOT NEED root to have BT-OBD working, only a specific BT board inside your unit.

* basically, MOST unit will be either of the RK3066/RK3188 family (roughly they can be divided in "Huifei&co", which is the best developped branch of these units, the Ownice units -which have a lot of work till they can be recommended- and the Newsmy machines ... which have even more work to do till they can be considered ready for prime-time), the MST786 family (like the AN21-U) which is indeed "more or less identical" independant of factory, with the exception of Sczion (? spelling) who're using the same cpu platform but have a very specific range of problems that are unique to the way Sczion uses this hardware.

ALL units I've ever bought, I had to pay import taxes on. Maybe other people are more lucky, but it made not difference if I bought it from Ali, Ebay, Directly from the factory : I got hit with import duties each and every time. Now do remember : this is Europe, maybe US citizens have more luck.

I've looked at you link. Couple of issues. The screenshots are 100% AN21-U. So if they are correct, that's a unit like we run on this forum. But the CPU ... is stated as a 1.6 Ghz dual core. I'm 100% sure that is not correct, as the highest MST786 cpu I've ever seen ran at 1.2 Ghz.

Buttons .... to be honest, I advise physical buttons. I've had a unit with capacitive buttons once, it was a pain. It is also one of the main gripes you can hear from the people who buy a Newsmy. Some even go as far as simply discarding the access to the touchbuttons because "they work so well".

Look at Wanxu : he had a similar unit with capacitive buttons. Got into trouble. Send it back to China, and now he has chosen a new AN21-like unit, but specifically with physical buttons. Talk to him, but I would follow his example.

The seller you linked to doesn't talk about about OBD. It's a safe bet it won't be possible with that unit.

If you're looking for a 7" display, you may be better served with a Zhoon unit, which has been bought by several people on this forum and they are very pleased with it : it does have physical buttons, it does allow BT, and I know for sure they do know the meaning of the word "customer care".

---------- Post added at 06:39 PM ---------- Previous post was at 06:34 PM ----------

:(

... I agree. That's far more bad luck than should be possible.

I hope you will have far better luck with the new one. Be advised (I suppose you know) what you've bought now is probably a JY (I suspect it is a Joying version) of the Huifei-variaty. Means you'll have a whole lot of tweaking to do, but at least it is perfectly possible. I tested this one last week, and I loved the screen (although I is positioned pretty far "deep" inside) of it.