When I open a smartphone, can I open multiple carriers?

A. 1

Yes, it's possible.
There's no reason not to.

Gentleman 8 years ago 0

OK

A. 2

The maximum number of openings is set for the same carrier.
It depends on the carrier, so we need to check.
It's possible with other carriers.

Gentleman 8 years ago 0

OK

A. 3

I heard that up to four are possible, but I don't know now.

Gentleman 8 years ago 0

OK