New phone number for old unused phone

[jniedosp]

I currently use an iPhone X which replaced my iPhone 6. Can Vsble activate my iPhone 6 with a new phone number so that I can keep my iPhone X separate?

[smgrinus]

I use an unlocked iPhone 6S currently on Visible so chances are that you can. You'll want to make sure the phone is unlocked though. 

[partypay]

If both the phones are unlocked and compatible, you can switch sim between the phones.

[stang67671]

You certainly can interchange sims and use whatever phone you want.