Error saying that the last line I used when I was talking on my iPhone is unavailable

I'm using iPhone Xs.

The last used line is no longer available

Do you want to call using the remaining line?

I see this error.

Can't you make it not appear?

I was wondering if anyone knows how to solve it

10054 2018-11-10 Gentleman

popular How can I resolve TLS security configuration errors?

popular What is the deadline for purchasing lotto?

popular Can I listen to music with Bluetooth earphones on the plane?

popular Is hair spray not allowed on the plane at all?

popular What is the nationality of Minnie?

Same Tag If you're going to Tokyo with an iPhone, make sure to put in Suica

Same Tag What should I do when I sell used iPhones?

Same Tag It opened next to the iPhone 6 Plus case, should I get it as?

Same Tag How long does it take to replace the iPhone battery?

Same Tag There is an error to get the Facebook app from the iPhone, what should I do?

Same Time If you choose between Galaxy S9 Plus and Note 8, which one will you choose?

Same Time Error saying that the last line I used when I was talking on my iPhone is unavailable

Same Time How often do you release the Apple Watch?