How to turn off mobile data

HI all,
I’m using EC25 module. could you help me turn off mobile data like on smart phone. I wanna use for voice call only.
thank all. Have a nice day.

I suggest you turn off the data service function through the SIM card service

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Could you share to me related AT commands?

I mean you can turn off the SIM card data service through the SIM card provider

Thank for your advance. But I wanna turnoff mobile data like on turn off data on smart phone. Still keep voice call signal

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@herbert.pan-Q we need to disable mobile data with save avility to receive calls and write / receive sms. How can we do it? In huawei modems there is switch in web interface. How can we do the same with Quectel modem?