The iPhone 16 supports eSIM on every model, and on iOS 17.4 and later you can install one in a single tap without scanning a QR code. One detail decides a lot for travellers: units bought in the United States are eSIM-only, with no physical SIM tray. This guide covers setup by all three methods, how to run a travel plan alongside your own number, and the settings that actually matter abroad.
Setting up an eSIM on iPhone 16
Method 1 — one tap, no QR code (iOS 17.4 and later)
- Open your activation email on the iPhone 16 itself. This is the step that matters: the link has to be tapped on the device that will carry the eSIM.
- Tap the Quick Install link. iOS opens the eSIM installer with the activation details already filled in.
- Tap Continue, then Add eSIM, and give the line a name you will recognise.
Method 2 — scan the QR code
Go to Settings › Cellular › Add eSIM › Use QR Code and scan the code from your activation email. The code must be displayed on a second screen — a laptop, a tablet, or a printout — because the camera cannot scan something shown on the same phone.
Method 3 — enter the details by hand
In the same Add eSIM screen, choose to enter details manually and type the SM-DP+ address and activation code from your email. Slower, but it works when nothing else does.
The two settings that decide whether it works abroad
Installation is not activation. After adding the line, set these before you fly:
- Cellular Data: Settings › Cellular › Cellular Data → select the travel eSIM line.
- Data Roaming: switch it on for the eSIM line only. This is required for the eSIM to connect to a local network abroad, and it does not enable roaming on your own number.
Leave your usual line as the default for calls and messages. That way your own number keeps receiving calls, texts and bank verification codes while data runs over the travel plan.
What is actually true about the iPhone 16 and eSIM
Worth being precise here, because a lot of what circulates is marketing rather than fact:
- Every iPhone 16 model supports eSIM. That has been true of every iPhone since the XS and XR of 2018.
- US models are eSIM-only. Bought in the United States, the iPhone 16 has no SIM tray at all — a property it shares with the iPhone 14 and 15. Everywhere else, the tray remains.
- You can store several profiles and run two lines at once. Also not new — this has been the case since the iPhone 13. Storing many and activating two is the normal limit.
- eSIM does not change battery life or connection speed. A profile is a set of credentials; speed comes from the network you connect to, and there is no eSIM-specific battery effect.
In other words, the iPhone 16 is an excellent eSIM phone — but because Apple's eSIM implementation has been solid for years, not because of anything specific to this generation.
Practical tips for travelling with it
- Label your lines. Name the travel profile after the destination rather than leaving it as "Secondary". With several stored profiles, this saves real confusion.
- Switch profiles without reinstalling. Settings › Cellular lets you turn lines on and off. A dormant profile costs nothing and stays ready for the next trip.
- Watch the right data counter. The iPhone's own tally is a manual counter you reset by hand and it drifts. Check your remaining balance on the provider's own page when the number matters.
- Turn on Wi-Fi Calling for your home line before you leave, so calls to your usual number still reach you over hotel Wi-Fi without roaming charges.
- Do not delete a profile you might reuse. An eSIM installs once; deleting it destroys any remaining data and validity. Switch it off instead.
If it will not connect
Four checks, in order: data roaming enabled for the eSIM line, that line selected under Cellular Data, the line switched on rather than merely installed, Airplane Mode off. Then restart the phone, which clears most first-connection failures. If none of that works, the usual remaining cause is a carrier-locked handset — something only your operator can resolve, and no eSIM provider can work around.
Frequently asked questions
Does the iPhone 16 have a SIM tray?
Outside the United States, yes. US models are eSIM-only and have no tray.
Can I use two eSIMs at the same time on an iPhone 16?
Yes — two lines can be active simultaneously, in any combination of physical SIM and eSIM. You can store more profiles than that and switch between them.
Will installing a travel eSIM affect my normal number?
No. Your own line stays active for calls and texts; only mobile data moves to the travel plan.
Should I install before or after arriving?
Before. Installation needs an internet connection, activation does not — most travel plans only start when you land and the line registers on a local network.
Does the eSIM work on an iPhone 16 bought abroad?
Yes, provided the handset is carrier-unlocked. Where it was bought only determines whether it has a physical SIM tray.
Ready to set one up? Browse eSIM plans for 90+ destinations — delivered by email in minutes, and installable in one tap on iOS 17.4 and later.
