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How to Use Two SIMs in a Smartphone: Using an eSIM and a Physical SIM at the Same Time

This guide explains how to use two SIMs in a smartphone without getting confused about mobile lines and internet settings. This is especially relevant for Moscow residents in July: it is travel season, and people need mobile tickets, banking SMS messages, maps, and taxi apps. You will get a clear sequence of actions, settings for iPhone and Android, data roaming recommendations, and a quick troubleshooting plan.

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How to Use Two SIMs

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How to Transfer an eSIM from iPhone to iPhone: Switching from a Physical SIM to an eSIM — 2026 Step-by-Step Guide

Looking for a clear way to transfer an eSIM from one iPhone to another without visiting your carrier or losing connectivity? Below, you will find straightforward steps, options for switching from a physical SIM to a built-in profile, and setup recommendations. This guide will be useful when buying a new iPhone, preparing for a trip, or connecting a virtual SIM through the “eSimka” service. Save the checklists so you can quickly verify the settings under “Cellular” on your device.

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How to Transfer an eSIM from iPhone to iPhone