: Dial *#06# on a device connected to the router's dashboard or check the sticker on the bottom of the router.
: Some regional variants (like those from Jazz or MTN) may require a full firmware replacement using tools like ZTE Download Tool or ADB drivers to enable a generic dashboard. zte mf283u unlock
For $50-80, you can get a newer router like the or Huawei B535 which are often sold unlocked with 5 GHz Wi-Fi and better band support. : Dial *#06# on a device connected to