I have an iPhone 12 with Monaco telecom, but for some reason 5G has stopped working for me? I don’t know why but it just doesn’t turn on anymore

I have an iPhone 12 with Monaco telecom, but for some reason 5G has stopped working for me? I don’t know why but it just doesn’t turn on anymore

I have an iPhone 12 with Monaco telecom, but for some reason 5G has stopped working for me? I don’t know why but it just doesn’t turn on anymore from Monaco