- First you need to download the original unbranded Huawei Mobile Partner software from the link which is provided at the end of the article.
- After that you need Huawei New Algo Unlock code which you can purchase from any server (or from here in cheap rates).
- After getting the unlock code close the software / dashboard / connection manager of your default Huawei E303 modem.
- Uninstall previous software which has come with your modem and install downloaded Original Huawei Mobile Partner Software which you have earlier downloaded.
- Now disconnect the internet and close the dashboard and eject the modem.
- Now change the sim (other than default sim) and again connect your modem to computer / laptop.
- Now its will ask you for unlock code.
- Just provide the unlock code of your modem and your modem will permanently unlocked.
- Now you can use any another network provider sim in your modem.
For Further Reading,