A core part of moving phones is taking your contacts with you. Before Google was backing up contacts, the only contacts to follow you to a new phone were whatever you could store on your SIM. Today, a ...

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

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 ...