porting a mobile number

i would like to keep my US mobile number so i can take it back when i return to the US

i'm planning on getting a SIM card here in Kuala Lumpur

i'm reading conflicting things about google voice but mostly that more recently they no longer allow US numbers to be ported abroad.  so i am looking for other soft phone options like an ITSP but not finding enough direct practical advice

any suggestions?  would be particularly interested if anyone knows of a reliable telecom shop in KL that could help with this.  Thanks much

New topic