In May 2018, Huawei officially closed its unlock code application page. The company cited user experience stability and data security concerns.

The V3 calculator is for all modern Huawei products. It is highly specific to a particular generation of hardware. Compatible Devices

: Specifically designed for v3 (v201) algorithms used in 3G and 4G devices. Device Types

The calculator addresses this need by creating a code unique to your device's IMEI. It is commonly used for unlocking:

A prompt will appear stating "Simlock Blocked" or asking for an unlock code.

If you are trying to unlock a modern Huawei smartphone,