To transfer contacts from iPhone to iPhone, using iCloud is the easiest method. Ensure both iPhones are signed in with the same Apple ID/Apple Account. On both phones, open Settings > tap your name > ...

The newer eSIM technology, which is quickly becoming the standard on high-end phones, is safer and more convenient.

Google Contacts lets you transfer contacts between Android smartphones by syncing them with your Google account. Alternatively, you can share contacts using VCF files. This article covers these ...

Google Backup and Restore allows you to sync your data to your Google account and easily retrieve it on your new device. A PC transfer method allows you to back up your data to a computer and then ...

If she's using the same SIM card, she can easily transfer contacts herself. If not and you're on AT&T, take both phones to a company-run store and they'll transfer them over for free. T-Mobile will ...