Korean carriers don't want the country codes displayed for local calls. However the network returns the entire phone number including the country code for Volte calls. According to the Koean phone numbering scheme (https://en.wikipedia.org/wiki/Telephone_numbers_in_South_Korea), we need to replace the country code +82 with a 0 prepended to the carrier code to format it as a national number. BUG: 22862845 Change-Id: Ifbb9eb8d5379608b4ea9d95ae7744779340b188e