A3000 chinese mobile - Dual-SIM or Dual-GSM support since Android 2.2 (again?)
A3000 is a real dual standby Android phone. It allows selecting a SIM when you call or send an SMS. And also you receive calls to any SIM. When you talk to one SIM, the second shows busy too. I've just got this phone (this morning) from alibaba.com and now I'm testing it.
Hello from Siberia :)