Disclaimer: The prices and information presented on this page reflect a snapshot at the time of research and may change at any time without prior notice.
Aisha
07 March 2026
Australia is one of the most popular outbound destinations for Singaporeans, and SIMBA handles it better than many budget telcos do. Australia falls under SIMBA's Group A international roaming zone, which means it's included in the roaming data bundled with every SuperRoam plan. Whether you're flying into Sydney for a holiday, Melbourne for a conference, or Brisbane for a family visit, your SIMBA plan can technically keep you connected from the moment you land. The operative word is technically. How much roaming data you actually have, what happens when you run out, and how the SIMBA Wallet behaves when pay-per-use kicks in are the details that separate a smooth trip from a nasty bill.
SIMBA (formerly TPG Singapore) is a full mobile network operator in Singapore, running its own infrastructure including 5G. All SIMBA SIM-only plans include international roaming data as part of the bundle, with no opt-in required. Roaming is activated by default on every SIMBA SIM. Australia is classified under Group A in SIMBA's roaming structure, which is the broader international zone covering 60+ countries worldwide including the UK, USA, Japan, and most of Western Europe.
Each SuperRoam plan includes a fixed amount of Group A data per cycle. Once that quota is exhausted, any additional data use in Australia is charged at pay-per-use rates, automatically deducted from your SIMBA Wallet. The critical detail: SIMBA Wallet deductions happen silently and in real time. If your wallet has a positive balance, roaming continues. If it doesn't, data stops. Keeping an eye on both your plan's Group A allocation and your wallet balance before and during your Australia trip is essential.
In Australia, SIMBA connects through partner carrier agreements. Telstra and Optus are the two dominant networks in the country. Coverage quality will depend on which local partner SIMBA's network agreement routes you to at your specific location. For city travel in Sydney, Melbourne, Brisbane, and Perth, this is generally a non-issue. For regional areas like the Great Ocean Road, the Whitsundays, or Uluru, coverage from any foreign roaming arrangement can be patchy.
Current plan names and data allowances are available at simba.sg and subject to change. The general structure as of early 2026 is as follows:
Note: Roaming data is drawn in sequence: APAC allocation first, then Group A allocation. If your plan has an APAC bucket that covers Australia separately, that may be consumed before Group A data kicks in. Check your specific plan's zone structure in the My SIMBA app before travelling. Confirm current pricing at simba.sg/roaming as rates and plan structures may change. (March 2026)
Check your Group A data balance before departure. Open the My SIMBA app or log into the SIMBA portal. Confirm how much Group A roaming data remains in your current cycle and when your plan renews. If you're mid-cycle with low remaining quota, top up or plan around Wi-Fi for the first part of your trip.
Top up your SIMBA Wallet. Once your Group A data runs out, pay-per-use charges come directly from your wallet. Charge it before you leave Singapore so there's no service interruption if you exceed your allocation in Australia. SGD $20-30 gives reasonable headroom.
Enable data roaming on your device. SIMBA roaming is pre-activated on your SIM, but your phone's data roaming switch must also be on. On iPhone: Settings > Cellular > Data Roaming. On Android: Settings > Connections > Mobile Networks > Data Roaming.
Set APN to "internet" if data doesn't connect. If your phone connects to an Australian network but data doesn't work, go to mobile network settings and verify the APN is set to "internet" with username and password fields left blank. Restart your device after setting this.
SMS SIMBA to confirm roaming status. From Singapore before departure, text 3 to 1218 to confirm your SIMBA roaming is active and ready. This takes two seconds and avoids surprises at Sydney Airport.
Monitor usage actively in Australia. The My SIMBA app shows your data balance in near real-time. Check it daily on a long trip. Silent wallet drain from background apps is the most common source of unexpected charges for SIMBA users roaming abroad.
SIMBA's included Group A data works well for short, light-usage trips to Australian cities. But the model has structural weaknesses for anyone planning two weeks of active navigation, social media, and streaming. The SIMBA Wallet drain problem is real: once you cross your Group A allocation, charges happen automatically in the background at SGD $4/GB. On a long Australian road trip where you're using Google Maps for hours a day, even a moderate data plan can run dry faster than expected.
A dedicated Australia travel eSIM separates your Singapore data identity from your travel data, gives you a clear allocation you can track without juggling wallet balances, and lets you choose a plan sized for your actual trip length. For Singaporean SIMBA users heading to Melbourne for the Grand Prix, or Sydney for a family holiday, or along the Great Ocean Road in a rental car, a travel eSIM as a data SIM running in parallel with your SIMBA SIM is a cleaner setup: your Singapore number stays active on the SIMBA SIM for calls and WhatsApp over data, while the travel eSIM handles all mobile data.
Australia is a country where mobile data matters more than almost anywhere else in the region. Public transport navigation in Sydney's complex rail network, the long driving distances between cities on the east coast, and the limited Wi-Fi availability once you leave urban centres all create real data demand. SIMBA's Group A allocation is serviceable for a city long weekend, but a two-week holiday with a road trip component regularly exceeds it.
The SIMBA Wallet drain issue is the specific pain point that pushes most users toward a travel eSIM for longer Australian trips. SIMBA's pay-per-use mechanism is automatic and happens in the background, deducting from your wallet without prompting. Travellers who don't actively monitor usage mid-trip routinely return to Singapore to find their wallet depleted. A dedicated travel eSIM removes this risk entirely: when the data allocation is used, data simply stops. No wallet, no overage, no surprise balance.
For SIMBA users on dual-SIM devices, the optimal setup for Australia is to keep the SIMBA SIM active for Singapore calls, banking OTPs, and WhatsApp, and run a dedicated travel eSIM Australia as the data connection. This keeps your Singapore identity intact while giving you predictable, affordable data for the duration of your trip.
Yes. Australia is included in SIMBA's Group A international roaming zone, which is bundled into all SuperRoam plans. You can roam using your plan's Group A data allocation. Once that quota is exhausted, pay-per-use charges of SGD $4/GB apply automatically from your SIMBA Wallet.
SIMBA uses local partner network agreements in Australia. Telstra and Optus are the two major carrier partners. Your phone will automatically connect to whichever partner network is available in your location. In cities this is rarely an issue; in remote areas, coverage may be limited regardless of which partner you connect to.
SIMBA roaming is active on all SIMs by default. Before leaving Singapore, text 3 to 1218 to confirm your roaming status, top up your SIMBA Wallet to cover any potential pay-per-use charges, and check your Group A data balance in the My SIMBA app. Enable data roaming in your device settings, and set APN to "internet" if data doesn't connect after landing.
Once your Group A data quota is exhausted, SIMBA switches to pay-per-use billing at SGD $4/GB, charged directly from your SIMBA Wallet in 10MB increments. This happens automatically without any prompt or notification until your wallet balance runs low. Top up your wallet before your trip to avoid service interruption.
For short city trips where 3-8 GB is enough, SIMBA's bundled roaming is convenient. For longer stays, road trips, or heavy data use, a dedicated travel eSIM with a larger allocation and no automatic overage billing is generally the better choice. A dual-SIM setup lets you keep both active simultaneously.
Yes. On dual-SIM compatible devices, your SIMBA SIM stays active for calls and texts to your Singapore number while the travel eSIM handles data. Set data roaming off on the SIMBA SIM (to prevent it from billing Group A data while the eSIM is your data line) or simply manage which SIM is set as default for data.
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