Originally Posted by
gfunkdave
The second way is to set your phone to forward all calls (aka unconditional call forwarding) to a US number before you leave.
While GrandCentral has issues, wouldn't it work to forward the US cell calls to the GrandCentral phone number and fool around with the GrandCentral settings while pointing those calls to another number that is set to forward to a separate international roaming cell phone number?
US mobile number > GrandCentral > Skype/Vonage > International mobile number is an example of what I'm talking about.
I do what I can to avoid roaming on a SIM card from a call-receiver-pays(-too) country while in another country.