The Huawei E8231s1 is a mobile broadband module used for wireless internet access. It's commonly used in various applications, including but not limited to, providing internet access for laptops, tablets, or even serving as a backup internet connection.
Network providers often lock their devices to their network, meaning a device purchased from one provider won't work with another provider's SIM card. This locking is usually done through firmware. Unlocking the device allows it to be used with any compatible network provider. huawei e8231s1 unlock firmware verified
Found modem : E8231s-1Firmware : ...Lock status : Locked (to Telstra/Optus/etc.)E8231s-1