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

Have you ever wondered exactly how a SIM card works? We'll help you understand why your phone needs one and what they do to keep you connected.

Does the Pixel 9a come with eSIM? Does it have a physical SIM card slot? How about dual-SIM support? Things have gotten a bit confusing in the past few years.