To open your contact list, surf to contacts.google.com and log in. To add new contacts, tap Create contact > Create a contact. Fill in the details shown or select Show more.

The default contacts apps from both Apple’s iOS software and Google’s Android system offer plenty of shortcuts and customization tools to keep your phone’s address book organized and more ...

If you’re properly backing up your contacts, your phone’s SIM card should have no bearing on your contact list. Still, the confusion is entirely understandable.