This replaces the entire operating system with a generic, unbranded version from ZTE. This is the gold standard for an .
Look at the barcode sticker on the base or rear panel of your ZTE MC801A.
The safest and most reliable method to unlock your router is requesting a code directly from the carrier that sold the device (e.g., EE, Three, Vodafone). Most carriers will unlock the device for free or a nominal fee once specific criteria are met. General Carrier Eligibility Requirements