BTV-W09C229B002CUSTC229D005,BTV-W09C233B029, earlier than BTV-W09C100B006CUSTC100D002 versions, earlier than BTV-W09C128B003CUSTC128D002 versions, earlier than BTV-W09C199B002CUSTC199D002 versions, earlier than BTV-W09C209B005CUSTC209D001 versions, earlier than BTV-W09C331B002CUSTC331D001 versions, earlier than CRR-L09C432B390 versions, earlier than CRR-L09C605B355CUSTC605D003 versions have a Factory Reset Protection (FRP) bypass security vulnerability. When re-configuring the mobile phone using the factory reset protection (FRP) function, an attacker can perform some operations to update the Google account. As a result, the FRP function is bypassed.