eSIM for iPhone 15 — Complete Setup Guide 2026 (All Models: Standard, Plus, Pro, Pro Max)

The iPhone 15 series (all four models: Standard, Plus, Pro, Pro Max) fully supports eSIM and in the USA the physical SIM slot has been removed entirely. Here is the complete setup guide for all iPhone 15 models.

iPhone 15 eSIM Key Facts

  • Supports up to 8 eSIM profiles stored simultaneously
  • Can run 2 SIMs active at once (Dual SIM dual standby)
  • USA models: eSIM only, no physical SIM slot
  • International models (UK, Europe, Asia): nano-SIM slot + eSIM
  • Quick switching between stored eSIMs without re-scanning QR codes

Step-by-Step iPhone 15 eSIM Installation

Step 1 — Check Your Phone is Unlocked

Settings > General > About > Carrier Lock. If it says No SIM Restrictions, you are good to go. If it shows your carrier name, contact them to unlock before travelling.

Step 2 — Get Your eSIM QR Code Ready

After purchase, check your email for the QR code. Open it on a second device (laptop, tablet, or another phone) or print it. You cannot scan a QR code displayed on the same iPhone you are installing to.

Step 3 — Open Settings on iPhone 15

Settings > Cellular > Add eSIM

Alternative path: Settings > Cellular > Add Cellular Plan > Use QR Code

Step 4 — Scan the QR Code

Your camera opens. Hold it over the QR code displayed on your second screen. It scans in 1-3 seconds. Increase screen brightness on the displaying device if it will not scan.

Step 5 — Confirm and Name the eSIM

A confirmation prompt appears showing the provider. Tap Add Cellular Plan. When asked to label the line, enter your destination (Japan, Europe, etc.). Tap Done.

Step 6 — Configure Dual SIM Settings

Settings > Cellular. You will now see two lines. Set them correctly:

  • Default Line for calling: keep as your home SIM
  • iMessage and FaceTime: keep as your home SIM (for number continuity)
  • Cellular Data: change to your travel eSIM

Step 7 — Enable Data Roaming for the Travel eSIM

Settings > Cellular > tap your travel eSIM line name > Data Roaming > toggle ON

This is the step most people miss. Without it, the eSIM installs but cannot connect to foreign networks.

iPhone 15 eSIM Troubleshooting

Restore from iCloud backup which includes eSIM profile. Or re-scan QR code. eSIM is tied to device hardware not the backup.
Problem Solution
Camera will not scan QR code Try entering the activation code manually. Your purchase email also contains a text code. Settings > Cellular > Add eSIM > Enter Details Manually.
Cellular plan could not be added Ensure you are on WiFi. Restart iPhone and try again. Confirm phone is unlocked.
eSIM installed but no signal abroad Settings > Cellular > travel eSIM line > Data Roaming > must be ON
Wrong SIM using mobile data Settings > Cellular > Cellular Data > select travel eSIM line
Lost eSIM after iPhone restore

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