Gone are/were the days when mobile phones were very expensive.

[kohyoongliat]

Gone are/were the days when mobile phones were very expensive.

Which is the correct verb?

Thanks.

 

[5jj]

Are. The days are now gone.

 

[Barque]

Which is the correct verb?

"Are" is normally the correct choice in the phrase starting "Gone are the days when". That doesn't mean "were" would always be wrong. It could work in context--if you were referring to a point in the past for instance.