Telstra International Day Pass or a travel eSIM: which one for your trip

What the Day Pass actually gives you

Telstra splits the world into three zones. Their international roaming page lists them in full.

That is 91 destinations in total. Two things about the table are worth pausing on.

The first is that Zone 1 is genuinely good value and Zone 2 is the one most Australians will actually be in. Bali, Tokyo, Bangkok, Ho Chi Minh City, London, Rome, Los Angeles are all Zone 2. The five dollar figure people remember from the ads applies to seven places, and six of them are in the Pacific.

The second is Zone 3, where you pay ten dollars a day for no data at all. It is only four destinations and only on Upfront plans, so it will not affect many people. It is worth knowing it exists, because Telstra’s Critical Information Summary does not mention Zone 3 anywhere. The document that exists to summarise the product for consumers has no row for the version of it that gives you nothing to browse with.

If you go over the two gigs, a top up is $10 for another 2GB, valid 31 days, available in Zones 1 and 2.

When you get charged, and when a day ends

This part is better than most people assume, and it has one trap in it.

You are only charged on days you actually use the service. Telstra is clear about this:

“Day Pass charges apply for the days when your service is used overseas to make or receive calls, send SMS, or if data is used, including background data usage. Receiving an SMS will not trigger your Day Pass.”

So a fourteen day trip is not automatically fourteen charges. If you spend three of those days on a boat with the phone in a drawer, you pay for eleven. And once you land back in Australia you can leave the Day Pass switched on and it costs nothing.

Read that quote again though, because there are two details in it that matter more than the headline.

Background data counts. You do not have to open anything. Email checking itself, an app updating, a map preloading, and the day is chargeable. Telstra’s own travel guide spells it out as “data for emails, social media, maps, and app updates”. In practice, if your phone is on and roaming is on, you are paying for that day.

Receiving an SMS does not trigger it. That single sentence is the most useful thing on Telstra’s website and we will come back to it, because it is the whole basis of the setup at the end of this article.

Now the trap. A “day” is not twenty four hours for most people. It ends at 11.59pm Australian Eastern Standard Time. From Telstra’s small print:

“International Roaming Day Pass inclusions expire for: Upfront Plans 24 hours from your service being used. Non-Upfront at 11.59pm Australian Eastern Standard Time (AEST). Any unused data expires at the end of each day.”

If you are on an older, non Upfront plan and you are in London, your Day Pass day rolls over at about two in the afternoon local time. Use a gig in the morning, the clock resets over lunch, and an evening of maps and messages starts a second chargeable day. Same calendar day for you, two days for Telstra.

It is also worth knowing that Telstra’s own documents do not fully agree with each other here. The marketing page and the Critical Information Summary both say Upfront plans get a rolling twenty four hours. Telstra’s Our Customer Terms, which is the binding document and was last changed on 31 October 2025, says a Day Pass Period runs “from 00.01 to midnight AEST” with no Upfront exception at all. We are not going to tell you which one applies to your account. We are going to tell you the two documents say different things, and that if it matters to your trip, the terms are the ones that count.

One more, which is a fairness point in Telstra’s favour and a planning point for you: switching roaming off part way through a day does not undo the charge.

“If you cancel your International Day Roaming Pass or deactivate roaming during that day, you’ll still be charged the Day Pass charge for that day.”

When the Day Pass is the better call

We would rather say this early than bury it.

Short trips to New Zealand and the Pacific. Zone 1 is five dollars for two gigs plus unlimited calls and texts. Our New Zealand plans start at $4.95 for 1GB over seven days and a 3GB plan is $11.95. On a two or three day trip the Day Pass costs about the same and gives you your phone number as well. Buy the Day Pass.

Trips where somebody needs to ring you. A travel eSIM is data only. It does not give you a number that takes calls. If you are travelling for work, or meeting a driver, or your mum is going to phone, the Day Pass keeps your actual number answering. That is not a small thing and no eSIM replaces it.

One or two nights anywhere. Ten dollars a day is fine for a night. The break even against a travel eSIM sits at roughly two days in Zone 2, and below that the Day Pass wins on convenience alone because there is nothing to buy, install or set up.

If you genuinely will not think about it. The Day Pass is already switched on by default on most Telstra plans. It activates when you use your phone. That is the entire user experience. If the idea of installing anything on arrival makes you tired, that has a value, and ten dollars a day for a short trip is a reasonable price for never thinking about it.

The arithmetic, by trip length

Here is the same comparison across the destinations Australians actually go to. Telstra figures are Zone 2 at $10 a day with 2GB a day, except New Zealand which is Zone 1 at $5. Our prices are from our product pages, checked 17 August 2026, in Australian dollars.

The pattern is straightforward once you see it. In Zone 2, a travel eSIM costs about what two days of Day Pass costs. In Zone 1 it takes four or five days to get there, and Telstra is throwing in calls and texts the whole time, which is why we said buy the Day Pass for a short New Zealand trip.

Two honest caveats on that table.

The Day Pass column assumes you use your phone every day, which most people do. If your trip has real off days, subtract them. And the Day Pass includes unlimited calls and SMS, which our plans do not. You are not comparing two identical products. You are comparing a data plan against a data and voice bundle, and if you need the voice, the bundle is the better product regardless of the number.

There is also no ceiling on the Day Pass. Telstra publishes no cap on the number of chargeable days or on total spend, and the “Maximum Monthly Charge” field in their Critical Information Summary is blank. Sixty days in Zone 2 with daily use is $600 in Day Pass fees, and nothing in the terms stops it.

What happens when you use up the two gigs

Not what you would expect, and it depends on which plan you are on.

“If you reach your Day Pass data allowance: Upfront Plans will get an SMS with the option to buy a Data Top-Up. Non-Upfront Plans will automatically get a Data Top-Up.”

Nothing is slowed down and nothing is blocked. On an Upfront plan you get a text and you choose. On an older non Upfront plan, Telstra adds $10 for another 2GB without asking, and does it again the next time you run out. There is no disclosed limit on how many times.

Two gigs is a lot for maps and messages and not much at all for video. If you are on a legacy plan and you watch a couple of episodes of something on hotel wifi that turns out not to be hotel wifi, the top ups are automatic and the number is not capped.

What a travel eSIM does not do

We would rather you know this before you buy than after you land.

No phone number. Our plans are data only. No local number, no calls, no texts sent from your number. Apps that run on data are fine, so WhatsApp calls, FaceTime and iMessage all work. A phone call to your actual mobile number does not.

You have to install it. Not hard, but not nothing. You buy before you fly, keep the setup email, land, join the airport wifi, and install from that email. It takes a few minutes and it needs a wifi connection to do it. Our how it works page has the sequence.

Your phone has to support it and be unlocked. Most phones from the last few years do. Some do not, and a carrier locked handset will not take a travel eSIM at all. That is why our compatibility check sits before the buy button rather than in the fine print afterwards.

Data roaming has to be switched on. For the travel eSIM specifically, in the country you are roaming in. It feels wrong and it is correct. We wrote a whole post on why that toggle catches people out.

The setup that gets you both

This is the part almost nobody publishes, and it comes straight out of Telstra’s own wording.

Telstra charges a Day Pass day when you make or receive a call, send an SMS, or use data. It explicitly does not charge you for receiving an SMS. So there is a configuration where your Australian number keeps taking your bank codes and two factor texts, your travel eSIM carries all the data, and Telstra bills you nothing.

Before you fly:

1. Buy your travel eSIM and keep the setup email.
2. Check your phone is compatible and unlocked.

After you land, on airport wifi:

1. Install and activate the travel eSIM from that email.
2. Set the travel eSIM as your line for mobile data, and turn data roaming on for that line.
3. On your Telstra line, turn data roaming off. This is the important one. Background data on the Telstra line is what triggers a $10 charge, and Telstra names “emails, social media, maps, and app updates” as examples.
4. Leave the Telstra line itself switched on so it can still receive SMS.
5. Do not make or answer calls on the Telstra line while you are away, and do not send texts from it. Either one starts a chargeable day.

Two warnings about step 7, because we would rather over explain this than have you get a bill.

Voicemail counts. Telstra says switching roaming off “will not prevent charges from being incurred if Voicemail/MessageBank is used for any of your Telstra numbers”. If someone rings and it diverts, that can be a chargeable event. If you want to be certain, turn voicemail diversion off before you go.

And dual SIM handsets can switch lines on their own. Telstra’s own dual SIM guidance concedes it plainly: “Devices with both eSIM and a physical SIM can switch data SIMs while roaming, triggering charges”, and “Either mobile number could potentially incur International Roaming charges”. Check your data line is still the travel eSIM a day or two into the trip. It takes ten seconds. Our dual SIM setup guide walks through where those settings live on iPhone and Android.

Done properly, you land with data on the travel eSIM, your bank still texts you on your Australian number, and Telstra charges nothing. That is the answer to the question most people are actually asking when they ask this question.

If you are on Telstra prepaid

The Day Pass is not available to you. Telstra reserves it for postpaid, and prepaid customers get a different and considerably narrower product.

Those packs cover 38 destinations, against 91 for the Day Pass. Italy, Spain, Ireland, Switzerland, Vietnam, the UAE, Mexico and most of Latin America are not on the prepaid list. If your destination is not one of the 38, Telstra’s own advice is that you will need wifi or a local SIM.

Telstra also tells you not to buy the pack before you leave, because it activates the moment you buy it:

“Don’t purchase your Pre-Paid International Roaming Pack yet; it will activate upon purchase, so it’s best to wait until you’re overseas.”

One point genuinely in prepaid’s favour, and it is a real one. There is no pay as you go roaming on Telstra prepaid at all. If you have no pack, nothing happens and nothing is charged. You cannot get a surprise bill on a prepaid service, which is more than can be said for the postpaid side.

We have written that comparison out properly in Telstra prepaid roaming vs a travel eSIM.

Check your plan is eligible before you rely on any of this

Postpaid is necessary and not sufficient. Telstra’s Critical Information Summary excludes about eighteen named plans from the Day Pass, including the $129 Mobile plan, the $89 Mobile BYO, the $199 Ultimate plans, Go Mobile Plus plans at $129 and above, Premium Mobile plans, and “any other plans or offers that include an International Roaming allowance”.

If you are on one of those, you do not have a $10 a day product waiting for you and you should find out now rather than at baggage claim. We have put the eligibility rules for all three carriers in one place in which Australian phone plans actually include roaming.

The verdict

Buy the Day Pass if you are going to New Zealand or the Pacific for under about five days, or anywhere for a night or two, or you need your own number to take calls, or you would rather pay for not having to think about it.

Buy a travel eSIM if your trip is a week or longer in Zone 2, or you are on Telstra prepaid, or your plan is one of the excluded ones, or you want to know what your data costs before you go rather than after.

Do both if you want your Australian number to keep receiving bank codes while the data comes from somewhere cheaper. That setup is in the section above and it costs nothing extra on the Telstra side.

An eSIM is not always the right answer, and we are not going to pretend otherwise. It depends on where you are going, how long for, and whether anyone needs to ring you.

If you have worked out that it suits your trip, our destination pages have the plans, and every price on them is in Australian dollars.

Questions people actually ask

Does Telstra charge me if I do not use my phone overseas?

No. The Day Pass is only charged on days you make or receive a call, send an SMS, or use data. Background data counts as use, so a phone that is on and roaming will usually trigger it. Receiving an SMS does not trigger it.

Can I turn the Day Pass off?

Yes, in the My Telstra app or by calling Telstra. On Upfront plans, turning it off means you connect via wifi only, because Upfront customers cannot elect pay as you go rates. On other plans you can switch to pay as you go instead, though at $3 per MB for data that is rarely a good idea. Turning it off part way through a day does not refund that day’s charge.

Will I still get bank SMS codes if I use a travel eSIM?

Yes, as long as you leave your Telstra line switched on with data roaming turned off for that line. Receiving an SMS does not trigger a Day Pass charge. Making calls, answering calls, sending texts and using data all do.

Does the Day Pass work with an eSIM?

Yes. The Day Pass is tied to your plan, not to whether your Telstra service is a physical SIM or an eSIM. Telstra publishes no eSIM restriction on it. What Telstra does warn about is dual SIM handsets switching data lines on their own and triggering charges.

What happens when I use up the 2GB in a day?

Nothing is slowed and nothing is blocked. On an Upfront plan you get a text offering a $10 top up for another 2GB. On a non Upfront plan the top up is added automatically without you doing anything, and Telstra does not publish a limit on how many times.

Is there a cap on what the Day Pass can cost me?

Telstra does not publish one. There is no stated maximum number of chargeable days and no stated maximum spend, and the “Maximum Monthly Charge” field in the Critical Information Summary is blank.

Can I use the Day Pass on Telstra prepaid?

No. Prepaid customers get separate Travel Packs covering 38 destinations, starting at $10 for 400MB over three days. Those packs activate the moment you buy them, so Telstra advises waiting until you have arrived.

Does a travel eSIM give me a phone number?

Not ours. Our plans are data only. Apps that run over data work normally, including WhatsApp calls, FaceTime and iMessage. A call to your actual mobile number needs your Australian line to still be active.

Sources

Telstra pricing, zones and terms retrieved 17 August 2026 from Telstra International Roaming, Telstra Pre-Paid International Roaming, the International Day Pass Critical Information Summary, Our Customer Terms, Part I Heading Overseas (last changed 31 October 2025) and the Telstra Personal Travel Guide.

The SIM Shop prices retrieved from our own product pages on 17 August 2026. We re-check every price in this article monthly and update the date at the top.

Written by Lachlan, who runs The SIM Shop from Brisbane and answers the support email himself.