How to unlock MTN / Aircel / Etisalat / Vodacom E303 Modem?
1. Very first, download the original unbranded Huawei Mobile Partner software from the link which is provided at the end of the article.
2. After that, you need Huawei New Algo Unlock code which you can purchase from any server or you can get from here in cheap rate.
3. After getting the unlock code close the default software of dongle.
4. Uninstall branded software which has come with your data card and install downloaded Huawei Mobile Partner which you have earlier downloaded.
5. Now disconnect the internet and close the dashboard and eject the modem from PC.
6. Now change the SIM (other carriers SIM card) and again connect your modem to computer / laptop.
7. Now it will ask you for unlock code.
8. Just provide the unlock code of your modem and it will be permanently unlocked.
9. Now you can use any another network provider sim in your modem after creating a new profile.
Note : If by any means your modem does not prompt for unlock code then still you can unlock your modem using Huawei Modem Code writer tool.