Follow these simple steps to unlock your Wingle to support all in sims in the world.
1. Connect your E8231 or E8221 Huawei WiFi Wingle to PC and let it install all the drivers and software which is required.
2. Disconnect from internet (if already connected) and close the software (if any running) as well as Webpage related to your E8231 or E8221 Wingle.
3. Now eject your device from PC.
4. Change the default sim with another network provider sim.
5. Now, again plug your E8231 or E8221 to PC.
6. Now it will ask you SIM unlock code.
7. Put the correct NCK unlock code into your device and click on OK.
8. Now your device will be unlocked permanently.