How to Set Up eSIM on iPhone 16: Complete 2026 Guide
Step-by-step guide to setting up an eSIM on iPhone 16 and iPhone 16 Pro. Covers installation, dual eSIM setup, troubleshooting, and travel tips.
The iPhone 16 series (including 16, 16 Plus, 16 Pro, and 16 Pro Max) is eSIM-only in the United States — there's no physical SIM tray at all. Even in markets where a physical SIM slot exists, eSIM is the preferred way to add travel data plans. Here's how to set it up.
iPhone 16 eSIM Capabilities
The iPhone 16 supports up to 8 eSIM profiles stored simultaneously, with 2 active at the same time. This means you can have your home carrier on one eSIM and a travel data plan on another, both active simultaneously.
Step-by-Step Setup
- Open Settings
- Tap Cellular
- Tap Add eSIM
- Select Use QR Code
- Point your camera at the QR code from MobiaL
- Tap Continue when the profile is detected
- Wait 10-30 seconds for the download
- Label it (e.g., "Japan Data" or "Europe Trip")
- Choose this eSIM as your data line
- Tap Done
Setting Up Dual eSIM for Travel
The key to smooth international travel is the dual-eSIM setup:
- Primary eSIM: Your home carrier (for calls, texts, iMessage)
- Secondary eSIM: Travel data plan from MobiaL
In Settings > Cellular, set your travel eSIM as the "Cellular Data" line and your home carrier as the "Default Voice Line." This way, you use cheap travel data for internet while still receiving calls on your regular number.
eSIM Quick Transfer
Upgrading from an older iPhone? iOS 17+ supports eSIM Quick Transfer, which moves your existing eSIM profile from your old iPhone to your new one during the setup process. No need to contact your carrier or scan new QR codes.
Troubleshooting
eSIM Won't Install
Ensure you have a WiFi or cellular connection to download the profile. Restart your iPhone and try again. Check that you haven't already installed this specific QR code (each code works once).
No Data Connection
Go to Settings > Cellular > your travel eSIM > turn on "Data Roaming" (many travel eSIMs technically roam on partner networks). Toggle Airplane Mode on/off.
"Carrier Lock" Error
Your iPhone must be unlocked. If purchased through a carrier on a payment plan, contact them to unlock it before installing a travel eSIM.