Change SIM card and turn ON router ( different network sim ).
Now the device display invalid sim or any other sim not support messages , don't worry move next.
Now establish the wifi and connect to computer or your phone /tab.
Now just navigate to open browser > enter the your default IP address ( 192.168.1.1 OR 192.168.8.1 ).
Now just login with username : admin ; password : admin
Now it's the simple prompt box asking you enter unlock code with a small box.
Now enter your unlock code and click Apply. If not prompting unlock code asking box > move to step 9.
Just navigate after login > Go to Advanced Settings – SIM Settings - Unlock Device – Enter the unlock code and click on Apply.
After entering correct unlock code , your router redirect to home page and displaying you new networks signal >
Congratulations! You successfully unlocked your Huawei E5372T and ready to use all over world all networks and just now you can create a new profile settings with APN address and surf internet!
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