Mobitel carrier of Sri Lanka has launched Huawei E3372h-153, which comes with the following details:
Model: Huawei E3372h-153
Serial NR. : G4P7S15325006906
Firmware: 21.180.09.01.393
Compile date / time : Feb 5 2015 10:29:20
Hardware ver. : CL2E3372HM
Dashboard version : TPS23.015.05.03.393_MAC23.015.05.03.393_LNX23.015.11.00.393

How to Unlock Huawei E3372h-153 Modem of Mobitel Sri Lanka?
1. Plug the Mobitel E3372H into Windows PC with a USB port.
2. Let it install all the drivers and software, which is required to run it.
3. Once the dongle’s dashboard/software is opened, disconnect the internet and close the dashboard of the Huawei E3372h modem.
4. Now, download DC-unlocker.
5. Detect your device under it.
6. At the end of the result, paste the following:
AT^NVRDEX=50503,0,128
7. Press enter from the keyboard.
8. Copy the whole results and save them in a notepad file.
10. It will be converted into unlock code and send to you back via email after receiving the payment.
Note I: Unlock / SIMLock / NCK code charge for E3372h-153 is not free. Its charge is only 6 USD, which you can pay through the PayPal button of this site. Correct code will be delivered in the email within 8 hrs.
Note II: For the E3372s dongle, you can directly pay 6 USD and mention the IMEI model in the transaction. No need to follow the above procedure.
You can also convert Non-Hilink Huawei E3372h-153 Mobitel to Hilink modem.