After opening, enter the mobile phone number (taking HUAWEI GRA-CL10, version number: GRA-CL10C92B366, system version number: EMUI system 4.0.1 as an example), first reset the login password, and then reset it. Log in, set various permissions, set voice to on, and set the volume to maximum. Let customers scan the code to see if the voice broadcast is available. If it is available, they can use it. If it cannot be used, check the permission settings to allow it. In addition, it should be noted that the Rural Credit Union e-purchase can only make voice broadcasts when it is working. If you turn it off, you won't receive voice messages. So even if the phone is locked, it must be in working condition.