This tool can generate the correct unlock code of Huawei E303, E369, and E357 modems. Currently, it is free for use and can unlock your dongle.
Unlock code calculator software is still in the beta stage; hence it may give errors. If you are trying to unlock your Huawei dongle, make sure you have only 10-attempts to enter the code. Once 10 attempts are exhausted, then your dongle will be unlocked permanently.
This LoginPlus_Client_v5.0 calculator still under testing phase, which means it was not unlimited and forever.
The login details are:
For Huawei Modem:
Login: LEVEL5
Pass: 12122012
For Others (Alcatel, Motorola, BlackBerry, ZTE, Pantech)
Login: user@test
Pass: password
Update: LoginPlus Software is no more supported for free. Users who want to purchase unlock codes at cheap rates can refer to this article.
I can provide Huawei, ZTE, LG, Blackberry, etc., brands unlock codes in genuine price.