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    eSIM Setup Guide

    What eSIM is, why it matters, and how to set yours up.

    What is eSIM?

    A SIM card is the tiny chip that connects your phone to your carrier (Verizon, T-Mobile, AT&T). For decades it's been a small plastic card you slide into the phone.

    eSIM ("embedded SIM") replaces that little card with a digital version built into your phone. There's nothing to slide in — your carrier sends you a QR code or activation, and your phone is connected.

    All iPhones sold in the US since the iPhone 14 (2022) are eSIM-only — no physical SIM slot. Most newer Android phones support eSIM too.

    Why eSIM is good for you

    • Switching carriers takes minutes, not a trip to the store.
    • You can have two phone numbers on one phone (great for travel or a separate "junk" number).
    • You can't lose a tiny card.
    • Traveling abroad? Buy a local data plan online and activate it before you land.

    Setting up eSIM on iPhone

    If your phone is brand new from the carrier: It comes pre-activated. Just turn it on and follow the prompts.

    Switching from a different phone:

    1. Settings → Cellular → Add eSIM.
    2. Tap "Transfer From Nearby iPhone" — both phones need iOS 16 or newer and to be near each other.
    3. Confirm on the old phone. Wait 1-5 minutes.
    4. If your carrier doesn't support transfer, tap "Use QR Code" and scan the one your carrier emailed.

    Carrier-provided QR codes: Verizon, AT&T, and T-Mobile all let you request one in their app, by phone, or in store.

    Setting up eSIM on Android

    1. Settings → Network & internet → SIMs (or "Mobile network" on some Samsungs).
    2. Tap "+" or "Add SIM".
    3. Choose "Download a SIM instead?" or "Add eSIM".
    4. Scan the QR code from your carrier — or enter the activation code they sent.
    5. Wait a minute or two for activation.

    If your carrier app has a "Set up eSIM" button, that's the easiest path — let the app guide you.

    Things to know first

    • You need internet to activate (Wi-Fi works fine).
    • Save your carrier's QR code email — you may need it again if you reset the phone.
    • Not all phones support eSIM. If yours is older than 2020, check the carrier's website first.
    • Not every prepaid carrier supports eSIM — call customer service to confirm.

    If you get stuck

    Call your carrier and say "I need help activating eSIM on my new phone." They do this hundreds of times a day. It usually takes 5-10 minutes.

    eSIM Setup Guide — What It Is and How to Switch | TekSure