Will Your Phone Work With an Australia or New Zealand eSIM? A Pre-Trip Compatibility Checklist

Usually, yes, if your phone is a recent flagship and it’s unlocked. But “recent flagship” and “unlocked” don’t tell you the third thing that matters once you land: whether your phone works properly on Australian or New Zealand networks now that both countries have shut down their 3G networks. Here’s how to check all of it before you spend money on a plan.

The short answer

Run four checks, in this order, because each one can pass while the next one fails:

Does your phone have eSIM hardware, confirmed by an EID number?
Is your phone actually carrier unlocked, not just eSIM capable?
Is your specific regional model and software version eSIM ready?
Does your phone register for mobile data on Optus or Spark, and can it still reach the emergency number, now that 3G is gone in both countries?

A lot of guides stop at step 1 or 2. An EID confirms eSIM hardware. It doesn’t confirm your carrier has unlocked the phone, and it doesn’t confirm the phone will register properly on an Australian or New Zealand network. Those are three separate facts, and travellers get caught out when they only check the first one.

Check 1: Does your phone actually have eSIM hardware

Go to your phone’s settings and look for an eSIM or “Add eSIM” option.

iPhone: Settings > Cellular > Add eSIM. Check Settings > General > About for an EID number.
Pixel: Settings > Network & internet > SIMs > Add eSIM.
Samsung Galaxy: Settings > Connections > SIM manager > Add eSIM.

An EID number is the strongest signal your device has eSIM hardware; it’s a physical identifier tied to the chip itself. Treat it as the real test.

The “Add eSIM” menu is a weaker signal in the other direction. If it doesn’t appear, that alone doesn’t prove your phone lacks eSIM hardware. It can also mean you’re on a regional variant that ships without eSIM, a carrier or administrative restriction is hiding the option, your software is out of date, or the device is under a managed-device (MDM) policy that blocks it. There’s no single universal menu path for every Android phone, since manufacturers implement this differently. If the option is missing, look up your exact model number and manufacturer against the official support pages: Apple, Google Pixel, or Samsung.

Finding the menu and seeing an EID confirms hardware support. It says nothing about whether your carrier has unlocked the phone or whether it will connect properly once you’re in Australia or New Zealand. Keep going.

Check 2: Is your phone actually unlocked

A phone can have full eSIM hardware and still refuse a second carrier profile if it’s locked to your home network.

iPhone: Settings > General > About > Carrier Lock. It should say “No SIM Restrictions.” Apple’s support documentation covers this check.
Android: Check with your carrier directly, since the menu path varies by manufacturer. Some phones show lock status under Settings > About phone > Status, but this isn’t universal, so a call or chat with your carrier is the more reliable route if the setting isn’t obvious.

If your phone is locked, a travel eSIM from another provider, including ANZROAM’s, may not activate or work properly on your phone until your carrier unlocks it. Unlock timing varies by carrier and by your account status with them, so allow time and follow your carrier’s own policy rather than assuming a fixed turnaround.

Check 3: Does your exact model and region support eSIM

This is where “iPhone 13 supports eSIM” turns out to be an incomplete sentence. Apple, Google, and Samsung all carve out exceptions by region and by where the device was originally sold, and those exceptions shift over time. Don’t rely on a blanket “all iPhones after X” or “all Pixels after Y” claim, including ones in this article; check the manufacturer’s current page for your specific model.

Brand	Current official starting point	Known caveat
Apple	iPhone XS, XS Max, XR or later	Support depends on model and region; some regional variants ship without eSIM. Check Settings > General > About > Carrier Lock and the phone’s specific model number against Apple’s support page
Google Pixel	Pixel 4 or later (all support eSIM)	Pixel 2, 3, and 3a have exceptions depending on carrier and region of purchase
Samsung Galaxy	Varies by model, see Samsung’s supported device list	Samsung states directly that eSIM may not be supported “depending on the country you purchased your device,” even when the model itself is on the list

These starting points are current as manufacturers publish them today, not permanent guarantees. The manufacturer’s page, not this table, is the source that changes when they add or drop a model. Look up your exact model number on the official support page before you buy a plan.

Check 4: Is your phone ready for Australian or New Zealand networks after the 3G shutdown

Run two separate checks here: whether your phone will actually get mobile data on Optus or Spark, and whether it can still reach the emergency number, now that 3G is gone in both countries. Generic phone compatibility lists skip this split, and it’s the reason this article exists.

4a. Mobile data compatibility with Optus or Spark

An eSIM-ready, unlocked phone still needs the right bands and configuration to register for data on your destination network. Manufacturer pages confirm a model supports eSIM; they don’t confirm that specific regional variant will register on Optus or Spark. Look up your exact model and region against Apple’s, Google’s, or Samsung’s current cellular-band and network compatibility pages before you travel. If you can’t find a clear answer there, confirm directly with Optus, Spark, or ANZROAM support rather than assuming it will work. Don’t treat “eSIM supported” as proof your phone will get data in Australia or New Zealand.

4b. Emergency-call readiness: AU 000 and NZ 111

All of Australia’s major mobile networks have now shut down 3G: Vodafone/TPG closed its network first, and Telstra and Optus followed in 2024. ACMA, Australia’s communications regulator, has published direct guidance on what this means for phones bought overseas. Telcos must identify devices that can’t reach Triple Zero (000) and are not allowed to keep supplying voice, data, messaging, or any other carriage service through a device once it’s been identified that way. ACMA has a separate page specifically about phones bought online or overseas.

New Zealand’s last 3G network closed on 31 March 2026, according to the NZ Telecommunications Forum. NZ TCF’s guidance is different from ACMA’s: some 4G phones still route voice calls over 3G, and an imported handset may fail to find a 111-capable network in New Zealand, rather than being identified and cut off under the rule ACMA describes for Australia.

What this means practically, treated as two separate countries rather than one combined outcome:

Australia: A 3G-only device won’t work at all. A 4G device that a telco identifies as unable to reach 000 can have its service, including data, stopped under ACMA’s rules, not just its voice or emergency-calling function.
New Zealand: A 3G-only device won’t work at all. A 4G device that still depends on 3G for voice, or an overseas model that can’t find a 111-capable network configuration, may still support 4G data while failing specifically for voice or emergency calls, according to NZ TCF.
Software matters in both countries. Keeping your phone’s system software current is part of what ACMA and NZ TCF both recommend, since carrier and emergency-calling configurations are often delivered through updates.

One important distinction: ANZROAM’s Australia and New Zealand eSIMs are data-only. Their product pages list Optus 4G/5G in Australia and Spark 4G/5G in New Zealand (verified against the live product pages), but that describes the network the plan runs on, not a guarantee that your specific handset will register on it. Confirm that with 4a first. ANZROAM’s eSIMs don’t provide a phone number, normal voice calls, or SMS, and installing one doesn’t establish or guarantee your handset’s emergency-call capability. That capability is a property of your phone and its own configuration for that country’s network, separate from any data eSIM. If you’re relying on your phone to reach 000 or 111 in an emergency, check that capability with your device manufacturer or a local provider, not with a data eSIM plan.

New Zealand’s TCF page also mentions texting 3G to 550 to check a device, but that check is built for someone already on a participating NZ mobile service, not for a visitor arriving without one. If you’re travelling in from overseas, verify your exact model with the manufacturer or your home carrier before you rely on it for anything safety related.

If one check fails

No eSIM hardware: Buy a physical SIM on arrival, or use your home SIM with roaming for the trip. A physical SIM is only a fallback if the handset itself is otherwise compatible with the destination network; it doesn’t fix a phone that can’t register on Optus or Spark at all.
Phone is locked: Contact your carrier to unlock it before you travel, and don’t leave it until the airport. Ask your carrier directly how long their process takes.
Model or region exception applies: Check whether a different SIM slot (if your phone is dual SIM) or a physical SIM is your fallback for this trip; don’t assume a workaround exists for every model.
Uncertain about data-network or emergency-call readiness (4a/4b): Contact your phone’s manufacturer, Optus/Spark, or your home carrier’s support line and ask specifically about band compatibility, VoLTE, and emergency calling for the country you’re visiting.

None of this is about stock or pricing at your arrival airport. It’s about knowing before you leave home whether your phone can even attempt the connection.

Once your phone checks out

If all four checks pass, including confirming data registration in 4a, an ANZROAM eSIM runs data-only on Optus (Australia) or Spark (New Zealand) without needing a physical SIM swap. Check the current plans on the Australia eSIM page or the New Zealand eSIM page, or read the ANZROAM FAQ for installation steps, including the recommendation to install over stable Wi-Fi rather than mobile data.

If you’re planning a longer trip, the Australia eSIM travel guide and New Zealand road trip coverage guide go into more detail on coverage by region.

FAQ

How do I check if my phone has an eSIM? Look for “Add eSIM” in your phone’s cellular or SIM settings (the exact menu path differs by brand, see Check 1 above). An EID number is the stronger signal that your phone has eSIM hardware. If the menu is missing, check your exact model against the manufacturer’s page before concluding your phone doesn’t support eSIM.

Does seeing an EID mean my phone is unlocked? No. An EID only confirms eSIM hardware exists. Carrier lock status is a separate setting, and you should check it independently (Check 2).

Will my phone work after the 3G shutdown in Australia or New Zealand? It depends on your specific model, its VoLTE support, its software version, and which country you’re in, since Australia and New Zealand now have different rules. All of Australia’s 3G networks are closed, and a 4G phone identified as unable to reach 000 can have its service, including data, stopped under ACMA’s rules. New Zealand’s last 3G network closed on 31 March 2026; a 4G phone that still routes voice over 3G, or an imported model that can’t find a 111-capable configuration, may still support data while failing for voice or emergency calls. A 3G-only phone won’t work on either network. Check with ACMA, NZ TCF, or your manufacturer if you’re unsure.

Does an ANZROAM eSIM include voice calls or emergency calling? No. ANZROAM’s Australia and New Zealand eSIMs are data-only, with no phone number, voice calls, or SMS. Emergency-call readiness depends on your phone’s own configuration for that country’s network, not on any data eSIM.

What if my phone doesn’t support eSIM at all? You’ll need a physical SIM, either purchased locally or through your home carrier’s roaming service, and that SIM still needs to go into a handset that’s compatible with the destination network.