EVA-L09 smartphones with software Earlier than EVA-L09C25B150CUSTC25D003 versions,Earlier than EVA-L09C440B140 versions,Earlier than EVA-L09C464B361 versions,Earlier than EVA-L09C675B320CUSTC675D004 versions have Factory Reset Protection (FRP) bypass security vulnerability. When re-configuring the mobile phone using the factory reset protection (FRP) function, an attacker can login the Swype and can perform some operations to update the Google account. As a result, the FRP function is bypassed.
http://www.huawei.com/en/psirt/security-advisories/2017/huawei-sa-20171013-01-frpbypass-en