Haier Black Pearl BT: pairs but doesnt work with any device!

[nwsco]

Hello all!
I own this phone, bought in the USA (in the European Triband version)
http://www.firsttoyou.com/servlet/th...-GSM%2C/Detail

It's also called the haier elegance


The phone built-in software says it supports these Bluetooth Protocols:
a2dp, avrcp, ftp, hsp, ssp, hfp and opp.

The Problem:
I can pair with all Bluetooth car radio's and carkits (parrot) (i live in europe), but I keep losing the connection
directly when trying to use it!
So pairing goes fine, but the connection is later lost.

I also tried car-radio’s (JVC, Sony, Pioneer etc) and PNA's (garmin, tomtom): all have this same problem.

Now I KNOW there is a Bluetooth device that should work with this phone, this one:
http://cgi.ebay.nl/BLUETOOTH-MOBILE-...QQcmdZViewItem
(which is this one? http://www.iqua.com/products_sub.php?navi_id=1238 ) but that is not what I want (or trust if it really works as they say!)

Can someone tell me why this phone pairs, but doesn’t work after that anymore?
What do i need to lookout for?

Please help and much thanks!