Hello, friend!
Dear customer, your device belongs to the Huawei carrier product series. Please click the Carrier Technical Support Website to obtain the answer.
The link is as follows:
https://support.huawei.com/carrier/productNewOffering?col=product&path=PBI1-7275726/PBI1-7275738/PBI1-23709862/PBI1-22892999/PBI1-8475642
Thanks!