How can I unlock sim my huawei mate 9 phone for free?

[Kateyful_2017]

How can I unlock sim my huawei mate 9 phone.With a network smart network provider. ?

 

[belodion]

Welcome.

By far the best way is to request an unlock code from your carrier, whether free or otherwise. You are unlikely to find elsewhere a free method that you could be sure would be safe to use.