What Is an eSIM and How Do You Set One Up?

An eSIM is a built-in digital SIM that lets you switch carriers or add a plan without a physical SIM card. Here's what it is and how to use it.

In this guide (5 steps):

1.Confirm Your Phone Supports eSIM
2.Get an eSIM from Your Carrier
3.Add the eSIM on iPhone
4.Add the eSIM on Android
5.Manage Two Lines (If Using Both SIM and eSIM)

Confirm Your Phone Supports eSIM

~15s

On iPhone: go to SettingsGeneralAbout → scroll down to look for "Available SIMs" or "eSIM." On Android: SettingsNetwork & InternetSIM cards → look for eSIM option. If neither shows eSIM, your phone may not support it.

Get an eSIM from Your Carrier

~15s

Contact your carrier (online, by phone, or in store) and request an eSIM. They provide either a QR code (a square barcode) or an activation link. Some carriers (like Google Fi, T-Mobile, and Consumer Cellular) offer self-service eSIM activation entirely online.

Add the eSIM on iPhone

~23s

Go to SettingsCellular → "Add Cellular Plan." Choose "Use QR Code" and scan the QR code your carrier provided. Or select "Enter Details Manually" if given an activation code. Follow the prompts to label the plan (e.g., "Personal" or "Work").

Quick Tip

If setting up a second phone number on one iPhone, you can label each line separately so it is clear which number you are calling or texting from.

Add the eSIM on Android

~15s

Go to SettingsNetwork & InternetSIMs → "Add SIM." Scan the carrier-provided QR code or enter the activation details. The new eSIM plan activates within a few minutes.

Manage Two Lines (If Using Both SIM and eSIM)

~29s

If your phone has both a physical SIM and an eSIM, you can set which line to use for calls, texts, and data. Go to SettingsCellular (iPhone) or SettingsNetwork (Android) and set your preferred primary line for each. This is useful for separating personal and work calls.

Warning

If you factory reset your phone or switch to a new device, your eSIM plan must be transferred or reactivated by your carrier — it does not automatically move like a physical SIM card does.

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An eSIM (embedded SIM) is a digital version of the plastic SIM card traditionally used in phones. Instead of inserting a physical card, you activate a carrier plan digitally by scanning a QR code or entering an activation code. The eSIM is built into your phone's hardware — it never needs to be removed or swapped.

Most newer iPhones (iPhone XR and later) and many Android phones (Samsung Galaxy S20 and later, Google Pixel 3 and later) support eSIM. Some phones support both a physical SIM and an eSIM simultaneously — this means you can have two active phone numbers on one phone.

Why would you want an eSIM? Several practical reasons: switching carriers without waiting for a physical SIM to be mailed; adding a local data plan when traveling internationally without replacing your SIM; having a work number and personal number on one device; or trying a new carrier while keeping your current one active as a backup.

iPhone 14 models sold in the US are eSIM-only — they have no physical SIM card slot at all. If you have one of these models, you must use eSIM.

Setting up an eSIM typically involves scanning a QR code your carrier provides, or using an app-based activation flow. The process takes about 5-10 minutes.

One important caveat: not all phone plans support eSIM, and some carriers charge extra for eSIM activation. Check with your carrier before assuming eSIM is available for your plan.

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