Why can't I use an iPhone 7 machine even if I insert a USIM?

iphone-7 iphone cellphone cell-phone smartphone mobile apple an-aerial-system usim usim-chip usim-card sim-card

I bought an iPhone 7 as an air-conditioner

I put it in because I had a USIM that I used before, but it says 'Not Service' and it doesn't work at all.

Why can't I use the USIM that I used well before?

7792 2017-05-05 Gentleman

In the case of an air meter, there are cases where you need to have an open history to use the existing USIM.
You can take the opening history to the agency.

Gentleman 8 years ago 0

A. 2

I think it's because of the opening history.
You can go to the direct management store of the carrier you are using.

Gentleman 8 years ago 0

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