How to painlessly switch iPhones and keep all of your data

To switch from one iPhone to another, you should back up everything to your iCloud account and then restore it on the new iPhone.

How eSIMs Work, and How to Switch From a Standard SIM

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

Using Two SIM Cards Is Easy and Can Save You Money. Here's How 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 ...
Digit

iPhone Air doesn’t support physical SIM: How to get, install and transfer eSIM in India

Apple’s latest iPhone Air has taken a bold step forward in mobile technology – it’s an eSIM-only device. That means there’s no slot for a physical SIM card, anywhere in the world, including India. For ...