Huawei has started rolling out a new update to its Mate 9 smartphone in the United States. The update carries a build number of MHA-L29C567B167, and brings along several changes, including fix for an issue related to Google Voice. The issue where-in users were not able to use Google Voice with SIM card of "a certain carrier" has been fixed. In addition, the drawer home screen display has been optimized, and a couple of new group messages-related features have been added. Via
Source: http://www.gsmarena.com/new_huawei_mate_9_update_fixes_issue_related_to_google_voice-news-23757.php