Check it on the back side of the modem or on Just Before the SIM Card Port (Slot) Or Open The Dashboard and Go-to TOOLS > DIAGNOISIS > and Check IMEI there. First of all we need to find the IMEI number of the modem we can easily find it by following ways. Contribute to forth32/huaweicalc development by creating an account on GitHub. Online huawei modem unlock calculator Unlock Huawei E303 Modem for Free Using Unlock … GitHub - forth32/huaweicalc: Huawei modem unlock code calculator WebHuawei modem unlock code calculator.