Using files known as vCards, you can easily transfer contacts to your Samsung Galaxy S10 from an Android or iPhone. Here are two ways to do it.

A dual-SIM setup lets you use one phone to make and receive calls and texts from two numbers. It's also super convenient and can save you serious cash when traveling. We show you how to use two SIMs ...

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

Learn what an eSIM is, how to set one up, and why digital SIM cards are transforming mobile connectivity. Discover the best eSIM options for travel, iPhone, and Android in this complete 2025 guide.