iPhone 16 eSIM: what replaced the SIM tray

Yes — and on US units the tray is gone

The iPhone 16 supports eSIM. Models sold in the United States ship without a SIM tray, so eSIM is the only way a line gets onto the phone. Models sold in other markets kept the tray.

Most people arrive at this question while upgrading. So rather than restate the answer five ways, here is what actually changes when your lines stop being objects and start being downloads.

What replaced the tray

A physical SIM is a card you own. You can pop it out, lend it, put it in a spare handset, or hand it to a shop assistant to swap for you.

An eSIM is a profile issued to one specific device. Moving it is a transfer, not a swap, and it needs the carrier to co-operate. That is the trade: you gain the ability to buy a plan from a hotel bed at midnight, and you lose the ability to fix things with a paperclip.

Nothing about signal, speed or call quality changes. Same radio, same networks, same masts.

Moving your number onto it

If you are coming from another iPhone, the transfer is built in — iOS offers to move the line during setup, or later from Settings → Mobile Data. It takes a couple of minutes and the old phone loses the line at the end of it.

If you are coming from a phone with a physical SIM, your carrier has to convert that line to an eSIM. Most do this in an app or a shop. A few still do not offer eSIM at all, which is worth checking before you buy the handset rather than after.

Keep the old SIM card until the new line is confirmed working. It costs nothing to hold on to and it is your only fallback if the conversion stalls.

Coming from Android is much the same job from the carrier's side: the line has to be reissued as an eSIM profile, and the transfer tools built into iOS for iPhone-to-iPhone moves do not apply. Expect an app, a shop or a phone call.

One habit worth breaking on day one: there is nothing to remove before you hand the old phone on. On a physical-SIM phone you would take the card out. Here you transfer the line off, and only then wipe the device — in that order, or the transfer has nothing to move.

Travel plans sit next to your home line

You can hold more than one profile and choose which one carries data. The usual arrangement abroad:

Home line

• on
• for calls and texts
• data roaming off

Travel eSIM

on, set as the data line

Most travel eSIMs are data-only. They do not replace your number — they just supply the internet, which is what messaging apps, maps and bank apps actually need.

Because the tray is gone on US units, a local prepaid SIM bought on arrival is not an option unless that carrier issues eSIMs too. Our country guides note where a local plan is worth the effort, and /cheapest-esim/ covers the travel eSIMs we have tested.

Before you erase or sell it

Two things people learn late:

• Erasing the iPhone deletes the profiles with everything else. A travel plan with time left on it may not survive that. Ask the provider first.
• Selling the phone means transferring your line off it first, or the buyer gets a handset with your carrier profile still attached.

If you want to check another model in the house before a trip, the eSIM phone checker has each one we hold data on.

One thing to do before you fly

Install the travel plan while you are still on home WiFi, then open Settings and confirm it is listed. An eSIM that failed to install is invisible until you need it, and the moment you need it is the moment you have no data to fix it with.

A short upgrade-day checklist, if you are reading this with a new phone in front of you:

• Home line transferred and making calls
• Old handset wiped only after that
• Old physical SIM kept in a drawer for a month
• Travel plan, if you have one booked, installed and visible under mobile data
• Data roaming switched off on the home line