What are eSIMs and how do you get an eSIM in Australia?

I helped out with a customer last week who wanted to investigate the use of an ESIM for their Iphone 13 Pro Max and I wanted you all to know and understand the concept of ESIM, how it works and the potential benefits it can provide for the right circumstances

If you’ve ever had to port out your mobile number or change providers, the relatively simple act of inserting a SIM card and getting your new plan to work can be easily messed up especially with fat fingers like mine!

Similarly, if you need two Mobile numbers on the same phone, for business purposes or just for convenience, there have previously not been many dual SIM phones out there that would do the job

If you’re a smart watch enthusiast, linking it up with your phone could also be problematic. In comes the ‘eSIM’ feature, and it’s the latest in technology made most popular in part by the newest iPhones.

An eSIM card is a chip that integrates inside your phone and works similar to the NFCs chip used for payment.

The eSIM chip is rewritable so that you can decide to change your operator with a single phone call.

However, not all network operators and phones offer eSIM support yet, but maybe things will change in the future.

How eSIM works?

On an eSIM compatible device, you can install the eSIM profile provided by your network provider, and after that, you can buy the data plans when you need them.

The best part about an eSIM card is that you can subscribe to multiple data plans from different network providers and switch between them according to your suitable needs.

As we know, every coin has two sides; similarly, the eSIM has two sides. It has many advantages but some disadvantages.

Advantages and Disadvantages of an eSIM card

Advantages Disadvantages
It works seamlessly across the world as it stores multiple cellular profiles. When your phone breaks or is damaged, it’s easy to transfer data to a new phone with a traditional SIM. But in eSIM cards, data is stored on the cloud, so users need to rely on the cloud to retrieve the data.
It does not require any specific slot for a SIM card. It is problematic for the users who don’t wish to be tracked as they cannot remove the SIM for the device.
No chance of losing the card as it is integrated inside the device. There are higher chances of getting hacked from cloud hosting.
eSIM provides the same level of security as a traditional SIM card. For users who like to use different mobile phones, it is easy for them with traditional SIM cards. But it is not possible with eSIM as it is embedded in the motherboard of the phone.
It also supports the integrity of the billing process during roaming. It is a challenge for the network operator to provide seamless operations worldwide.

What is an eSIM?

eSIM stands for ‘embedded SIM’ and simply removes the need for a physical SIM to be inserted into your phone. This is especially handy for those who like to change providers, or for those who simply can’t be bothered with the physical SIM card process.

  • eSIMs also allow two numbers to be stored on the same phone.
  • Unlike some dual SIM phones, both profiles can have numbers that are active at the same time, meaning you don’t need to switch between the two.
  • eSIM also allows the connection between wearables (e.g. the Apple Watch) with the user’s smartphone. Previously, Bluetooth had to be used.
  • eSIMs mean you don’t even need to change SIM cards when you’re overseas – simply find a compatible eSIM provider and off you go.

eSIMs have been in existence in Australia since about 2015, with the Samsung Galaxy 2 smart watch being one of the first devices to have the feature.

As with many other technological advents, Apple made the eSIM term a headline in in 2017 with its Apple Watch 3, and in 2018 with the release of its latest iPhones, which have the feature.

eSIMs may also eliminate the need for SIM card slots, which can aid with water resistance and stop dirt from getting in the precious internals of your new $1,000+ device.

So, how do you get your hands on this latest step towards the mobile tech future? You first need a compatible phone or watch, and then find a compatible provider that enables the feature. Below we’ve narrowed down some of the providers and phones to make the hunt a bit easier.

What is the difference between an eSIM and regular SIM cards?

The main difference between an eSIM and a regular SIM card is that eSIMs aren’t physical, while you can physically hold a SIM card in your hand. eSIMs tie your smartphone to the plan you’ve signed up to via a chip in the motherboard, so an eSIM and traditional SIM card still work in the same fashion, but you don’t have to worry about inserting a SIM card when you get a new phone or plan.

The only other main difference is that eSIMs require more tech to run on a smartphone, hence why not every modern smartphone is eSIM compatible.

What devices are eSIM compatible?

Below you’ll find a list of devices that are eSIM compatible. Keep in mind that this is not a complete list of eSIM compatible phones, just a snapshot of phones and devices that are.

Selected phones with eSIM Compatibility

  • Google Pixel 6
  • Google Pixel 6 Pro
  • Google Pixel 5
  • Google Pixel 4
  • Google Pixel 4 XL
  • Samsung Galaxy S21
  • Samsung Galaxy S21+
  • Samsung Galaxy S21 Ultra
  • Samsung Galaxy S20
  • Samsung Galaxy S20+
  • Samsung Galaxy S20 Ultra
  • Samsung Galaxy Note 20
  • Samsung Galaxy Note 20 Ultra
  • iPhone 13 Mini
  • iPhone 13
  • iPhone 13 Pro
  • iPhone 13 Pro Max
  • iPhone 12 Mini
  • iPhone 12
  • iPhone 12 Pro
  • iPhone 12 Pro Max
  • iPhone 11
  • iPhone 11 Pro
  • iPhone 11 Pro Max
  • iPhone SE

Watches with eSIM Compatibility

  • Huawei Watch 2 Pro
  • Apple Watch Series 3
  • Apple Watch Series 4
  • Apple Watch Series 5
  • Apple Watch Series 6
  • Samsung Gear S2
  • Samsung Gear S3
  • Samsung Galaxy Watch

eSIM phone plans and providers

Currently there are only a select few providers that offer the eSIM feature.

The ‘Big 3’ in Telstra, Vodafone and Optus primarily use the service to promote synchronisation between wearables and smartphones, rather than dual SIM capabilities and other purported features.

All three providers offer eSIM use with compatible phones.

Telstra eSIM

Telstra’s eSIM is called ‘One Number’ and is currently only available syncing with an Apple Watch and iPhone (running iOS 11 or higher), as well as Samsung Galaxy watches and phones. At present, only postpaid plans are available with the technology.

  • Telstra charges an extra $5 a month for the privilege of using One Number, which is in addition to your phone plan.

Telstra MVNOs, such as ALDI Mobile and Boost Mobile, do not currently have access to eSIM features.

Telstra now offers eSIM functions on select devices, including the iPhone 12 series.



Optus calls its eSIM service ‘Number Share’ and it’s much the same as Number Sync and One Number. Compatible devices include the Apple Watch GPS+ Cellular and Samsung Galaxy Watch (Cellular), and iPhones running iOS 11 or higher.

  • This service is a month-to-month add-on, and priced at $5 per month. However, selected Optus customers can access Number Share free when purchased with an eligible Apple Watch.

There’s good news if you happen to have, or have been considering an iPhone 12, 12 mini, 12 Pro, 12 Pro Max, SE 2020, the 11 series, XS, XS Max or XR from Optus — the eSIM function on these devices is supported by Optus through its postpaid plans. If you’re looking to buy one of these devices on a 12, 24, or 36-month plan from Optus and would prefer for your Optus SIM to be an eSIM, you’ll need to sign up in store as you can currently only access the eSIM QR codes in Optus stores.

Vodafone eSIM

Vodafone’s eSIM is called ‘Number Sync’ and is available on a range of Apple and Samsung watches and phones. Most Vodafone postpaid plans are compatible with eSIM, excluding prepaid and Cap plans.

  • The first three months are free in the form of a ‘subscription credit’, and after that period you’ll be charged $5 per month for your eSIM in addition to your phone plan.

Felix eSIM

The only MVNO to currently offer eSIM is Felix mobile. The telco operates on the Vodafone mobile network and offers one simple prepaid plan for $35 per month with unlimited data at the capped speed of 20Mbps. When you sign up to Felix’s phone plan, you’ll have the choice to get a physical SIM card sent to you, or opt for an eSIM instead. Felix is focused on sustainability, so the option to reduce e-waste by choosing an eSIM might be a plus for customers looking for a more sustainable telco.

What can eSIM do?

Here are some uses for an eSIM:

  • Travel overseas: There’s no need to hunt around for a SIM card if you’re travelling overseas; simply contact a provider over there, or download the telco’s app, and get setup with your eSIM. Keep your Australian plan as well; there’s no need to remove your SIM card.
  • Link your smartwatch: Previously you had to link your smartwatch to your phone via Bluetooth. Now you can accept calls on your watch when you’re out jogging or when out and about – leave the phone at home.
  • Keep business separate: The dual SIM feature means you can keep two numbers on the same SIM and potentially turn off one number outside business hours, or choose to ignore that call.
  • Get more bang for buck: eSIM allows you to potentially get a cheap data-only plan and pair it with a cheap unlimited plan. This could work out to be better value than if you just got calls, texts and data in one plan.

These four reasons suit a variety of different users. From jet-setters to corporate types and penny pinchers, eSIM can be useful for various walks of life; it all comes down to how you can find a use for it.

What is planned for eSIM and should you consider it?

Not sure if most of us are ready ( or need ) eSIM technology right now. It certainly is a right fit for people within the SMART WATCH ecosystem and that is exactly the market that the TELCO’s appear to be targetting. As I alluded to earlier in the Advantages column of the table, the SIM technology offers so much more and it will only grow from here on in.

Currently, only a few providers have enabled the feature, which narrows your choice of plans and they also could charge a price premium for the service.

Dont let me sway you if you want to explore the ESIM path. It does work and has benefits but are the majority of Australians willing to pay the premium for this uplift?

My guess is no but come and ask me in a few years time and I am sure the days of inserting that little piece of plastic into your phone will be a thing of the past just like other technology, it never stops moving forward and evolving



Patrick Larobina