First of all I'd like to thank you to fix in few hours the no-audio issue after a call forwarded to Zoiper Beta from the mobile number. It works! You are great, indeed.
I'd like to detail better the reason why I'd see well some dial rules/dial plans within Zoiper.
My mobile provider offers a bunch of free minutes to call in the country. Abroad no free minutes. Therefore I use the VoIP account connected to Zoiper in outbound. I don't have any problem to choice manually a call, either via GSM or via Zoiper.
My wife (and, generally speaking, most of the no-techie guys) can't manage the two options.
A dial plan like this would be great:
Numbers starting by (just a sample for US):
via GSM; all the others via Zoiper.
Does it make sense?
With a dial plan like that the unique Android dialer would be Zoiper, and the standard dialer, coming with Android, isn't necessary any more. Inbound with the forward to the VoIP number and outbound with the dial plan. Zoiper would be the unique telephone interface.
Best Regards!