5G eSIM Australia | Optus
- Receive your eSIM immediately
- Supports TikTok & AI tools
- Quality Guarantee – Refund before usage or if you experience issues
- Access 24/7 customer support
- Verify your device compatibility
Product details
Validity 1-30 days
Internet speed 5G/4G LTE
Service type Data only
Coverage area All of Australia
Data limit Unlimited Plans: 15 GB/day at full speed, then slows to 1 Mbps
Hotspot Sharing Yes
Local telecom operator Optus 5G
What to expect
What is an eSIM for Australia?
An eSIM Australia is a digital SIM card that lets you add a mobile data plan to your phone without needing a physical SIM. With a Australia eSIM, you can stay connected as you travel across cities like Sydney — no need to visit a SIM card store or worry about roaming fees.
How to Get Your Australia eSIM?
- Download the Klook app
- Check device compatibility
- Select your destination and data plan
- Activate instantly via app or QR code
- Turn on data roaming to connect to the local network
Why Choose Klook’s eSIM for Australia?
- High-Speed Data: Reliable connectivity through top local networks like Optus.
- Instant Setup: Activate in 5 minutes — no physical SIM required.
- Affordable Plans: Transparent pricing with no hidden expensive roaming fees.
- Wide Compatibility: Works with 100+ eSIM-enabled devices.
- Hotspot Sharing: You can easily share data with other devices.
Things to Know About Australia eSIMs
1. How does eSIM Australia work?
Australia eSIM works by digitally adding a mobile plan to your device. Simply purchase a prepaid Australia eSIM, install it through the Klook app or a QR code, and get connected as soon as you arrive. Hotspot and tethering are supported and you can easily add additional data linked to your main eSIM if you run out of data.
2. Is eSIM worth it for Australia?
Definitely! An eSIM is the easiest way to stay connected while traveling in Australia — no need to swap physical SIM cards. With Klook’s Australia eSIM, avoid expensive roaming fees while enjoying fast and reliable coverage across Sydney and beyond from Optus for a seamless travel experience.
3. Can you keep your primary SIM number with a Australia eSIM?
Yes. Thanks to the dual SIM functionality of an eSIM, you can keep your local phone number. Your local SIM card stays in your phone, and you add the eSIM Australia plan for internet access. This lets you enjoy data in Australia without having to swap out your physical SIM card.
Terms & Conditions
Cancellation policy
- Cancel before your eSIM connects for a full refund. If you face issues after activation, low usage qualifies for a full refund, while higher usage may qualify for a partial refund plus 10% extra in KlookCash. All refunds are at Klook’s sole discretion.
How to use
Additional information
- For connection issues, please contact merchant via the following steps: Account > Bookings > eSIM booking > Top right contact merchant
Reviews
care *********
Review for: Data per day · 3 days · Unlimited · Data only Book now
I've had a consistently positive experience purchasing eSIMs through Klook. The deals are impressive, and the service offers uninterrupted internet connectivity. Using videocalls, audiocalls, and uploading videos has been seamless, enhancing my overall experience.
Mohd ******
Review for: Data per day · 10 days · Unlimited · Data only Book now
I recently purchased an Australia eSIM through Klook for my trip, and overall, I was very satisfied with the experience. As someone who relies heavily on mobile data for navigation, ride-hailing apps, social media, messaging, and staying connected with family and friends, having reliable internet access throughout the trip was extremely important. The booking process on Klook was straightforward and user-friendly. After completing the purchase, I received the eSIM details and installation instructions almost immediately. The instructions were clear and easy to follow, making the setup process quick even for someone who was using an eSIM for travel. I was able to install the eSIM before departure and activate it once I arrived in Australia, which saved me the hassle of searching for a local SIM card at the airport.
BryanMay *******
Review for: Data per day · 10 days · Unlimited · Data only Book now
had a really smooth experience using an eSIM for Australia that I purchased through the Klook app. The whole process was incredibly convenient—from booking to activation. Right after purchase, I received clear instructions, and setting up the eSIM took just a few minutes with no need to visit a store or swap physical SIM cards. Coverage was excellent throughout my trip. The connection was stable, fast enough for navigation, video calls, and even streaming without frustrating interruptions. What I appreciated most was the flexibility. I could choose a plan that matched my travel duration and data needs, and everything was transparent—no hidden charges or complicated terms. Overall, it made traveling so much easier. No hunting for local SIM cards, no language barriers, and no stress. I’d definitely recommend using an eSIM through Klook for anyone visiting Australia—it’s a simple, reliable, and hassle-free.
Christine *******
Review for: Data per day · 7 days · Unlimited · Data only Book now
Easy set up and fast connection. I did an online purchase in Klook prior departure from ATL and the moment I landed Sydney, I just turned my phone on and got connected to the local Optus provider. Unlimited data browsing and usage was a breeze. Absolutely helpful when using the maps. There was a little bit of a spotty slow connection when we drove up the Blue Mountains (of course as expected since mountains always have a tricky spot). Instead of staying within the motorway, our map had a delay and we ended up driving through a back road. We got rerouted to enter back the motorway 30mins later, but heck yeah it was a beautiful countryside view we had for few minutes! What an adventure! Overall the signal was satisfactory to keep us updated.
JOSEPH *****
Review for: Data per day · 7 days · Unlimited · Data only Book now
Was I hesitant at first? Absolutely. Am I now a full-blown fan? 100% YES! I’m so glad I took the leap and got this E-SIM AUSTRALIA OPTUS from KLOOK. I activated it before my trip, and—like magic—it only kicked in when I landed in Australia 🇦🇺. No fuss, no stress, just instant connectivity. 📶 The signal? Flawless. From the busy streets of Sydney to the scenic corners we explored, the 5G was strong and steady. No dropped calls. No loading circles. Just smooth-sailing browsing, navigating, posting, and Googling where to eat next. 😎 ⭐ 5 stars from me! I’ll definitely grab this again on my next adventure. Travel smart, stay connected—highly recommended! ✨📱
MariaReaMartha ********
Review for: Data per day · 10 days · Unlimited · Data only Book now
Having this eSIM made our trip so much easier — no more worrying about finding Wi-Fi or getting lost! Navigation was smooth and stress-free the whole way. Fore more travel tips follow #mattiathebigboy
Garry ******
Review for: Data per day · 30 days · Unlimited · Data only Book now
Generally the esim has awesome internet speed and coverage and I would recommend this esim to anyone travelling to Australia plus it is very easy to use and activate. Rxcept for when you are on train or land travel as it sometimes lag or cuts off. i hope they sell it with a tied up Australian phone number so when you dont have data you can still be easily reached.
FAQs
What devices are compatible with eSIM?
How can I activate the eSIM directly from the Klook app?
How can I activate the eSIM with a QR code?
The eSIM didn't get activated on my device. What should I do?
Can I scan one QR code with multiple devices?
Should I turn on data roaming when I'm using the eSIM?
An error occurred while I was installing the eSIM. What should I do?
Explore more on Klook
Top attractions in Sydney
- 1 Sydney Harbour
- 2 Sydney Opera House
- 3 Sydney Zoo
- 4 Bondi Beach
- 5 Darling Harbour
- 6 Featherdale Wildlife Park
- 7 Sydney Airport
- 8 Manly
- 9 Mrs Macquarie's Chair
- 10 Circular Quay
- 11 Sydney CBD
- 12 Royal Botanic Gardens
- 13 Queen Victoria Building
- 14 The Rocks
- 15 Watsons Bay
- 16 Milson Park
- 17 Blues Point Reserve
- 18 Blaxland Riverside Park
- 19 Parsley Bay Reserve
- 20 Australian Botanic Garden Mount Annan
care *********
Review for: Data per day · 3 days · Unlimited · Data only Book now
I've had a consistently positive experience purchasing eSIMs through Klook. The deals are impressive, and the service offers uninterrupted internet connectivity. Using videocalls, audiocalls, and uploading videos has been seamless, enhancing my overall experience.