If Ardexa has provided these modems, they will be configured to be automatically used by ArdexaLinux. Please do not change the configuration. Furthermore, please do not do a "factory reset". Doing so will invalidate the modem configuration and you will have to manually reconfigure it. If a factory reset has been done OR you have purchased one of these modems separately, please contact Ardexa for the Huawei E8372 configuration. Make sure there is no PIN set on the SIM card. The Ardexa provided Wingles do not come configured for a PIN on the SIM card.