If no. you want to keep is with another provider, you ask them for a PAC; Simples😄

Hi ​@GillianBinns,

I've just sent you a private message to help get this sorted.

To find it, click your profile picture in the top-right corner and select ‘Private Messages’.

You can also use this direct link to your inbox: https://community.idmobile.co.uk/inbox/overview

I'll speak to you there.

Thanks,
Hosai

My old SIM was id mobile 

Hi ​@Twitcher.

Thank you for your post.

Kindly note that iD Mobile does not support transferring a number internally between iD Mobile accounts.

If you would like to retain your existing mobile number, you would have to do an upgrade on your existing account or triangle port your mobile number to your new contract.

Thanks,

Marquerita

The iD Mobile Team