Bali eSIM vs SIM Card: What's Better for Australians?
Bali eSIM or local SIM card? Compare setup, convenience, costs and roaming for Australians travelling to Bali, and choose the right option for your trip.
Published 2 September 2026 · Updated 13 September 2026 · By Roamza
If you're heading to Bali, sorting out mobile data probably isn't the most exciting thing on your to-do list — but it's one of the most useful. A bit of planning before you fly means you can navigate, book rides, message your hotel and share photos without hunting for free Wi-Fi or stressing over roaming charges.
This guide compares two popular options for Australians: a travel eSIM you set up before departure, and a local prepaid SIM card you buy in Bali. We'll walk through how each works, what they cost, and which one might suit your trip.
What is a Bali eSIM?
An eSIM (embedded SIM) is a digital SIM built into compatible phones. Instead of swapping a physical card in and out of your phone, you install an eSIM profile over the internet — usually by scanning a QR code or tapping an install link.
For Australians heading to Bali, a travel eSIM can be purchased online and installed before you leave home. On compatible dual-SIM devices, your Australian SIM can generally remain installed while the travel eSIM is used for mobile data, so you can keep your usual number active for calls and texts. For a full guide on this, see keeping your Australian number with a Bali eSIM.
Not sure if your phone supports eSIM? Check compatibility here before you buy.
Going to Bali?
Get your Bali eSIM sorted before you fly and land ready to connect.
What about buying a local SIM card in Bali?
Local prepaid SIM cards are widely available in Bali and can be a practical option for some travellers. They're sold at airports, convenience stores, mobile phone shops and authorised retailers across the island.
A local SIM may make sense for longer stays, travellers who specifically need an Indonesian phone number, or devices that don't support eSIM. Purchasing, registration and setup requirements vary between providers and products — some may require passport identification or SIM registration, while others may not. It's worth checking what's involved for the specific product you're considering before committing.
Bali eSIM vs local SIM card
| Feature | Travel eSIM | Local SIM card |
|---|---|---|
| Buy before leaving Australia | Yes | Usually purchased after arrival |
| Physical SIM swap | No | Usually yes |
| Keep Australian SIM installed | Yes, on compatible dual-SIM devices | Depends on device/SIM configuration |
| Mobile data when you arrive | Can connect after arrival when correctly installed and activated | Available after purchasing and setting up the SIM |
| Need to visit a SIM retailer | No | Usually |
| Local Indonesian phone number | Usually no — many travel eSIMs are data-only | Often available depending on plan |
| Good for short holidays | Excellent | Good |
| Good for longer stays | Depends on plan | Can be a good option |
| Setup | Install digitally | Physical SIM installation and any required registration |
Features vary by provider, plan and device. Always check the conditions of the specific SIM or eSIM you're purchasing.
What happens to my Australian phone number?
This is one of the most common questions Australians have about travel eSIMs. On a compatible dual-SIM phone, installing an eSIM doesn't necessarily mean removing or replacing your Australian SIM. Your Australian SIM can generally remain installed while the travel eSIM is selected for mobile data.
That said, it's important to check your roaming settings. If data roaming is left enabled on your Australian SIM, your phone may still try to use it for data in Bali — which could incur roaming charges from your Australian carrier. Most travellers turn off data roaming on their Australian line and let the eSIM handle mobile data.
Calls and SMS sent through your Australian carrier may still incur roaming charges depending on your carrier and plan. Check with your Australian provider for their current international roaming rates before you travel.
What about international roaming?
Using your Australian carrier's international roaming is another option. Most Australian telcos offer travel roaming add-ons or pay-as-you-go rates for destinations like Bali.
Pricing, inclusions, destinations, data allowances and call/SMS rates vary significantly between carriers and plans. Some plans include a daily roaming pack; others charge per MB or per minute. We'd encourage you to compare your carrier's current roaming conditions before travelling — what's included can change, and it's worth knowing exactly what you'll be charged.
Which option is easiest for Bali?
For many Australians taking a typical Bali holiday — a week or two of beaches, restaurants and day trips — a travel eSIM can be one of the simplest options because it can be organised before departure. You buy online, install at home, and you're ready to connect when you arrive.
A local SIM could make more sense if you're:
- Staying for an extended period and want a plan designed for longer use
- Needing a local Indonesian phone number for calls or local services
- Using a phone that doesn't support eSIM
- Preferring to buy from a local provider once you arrive
There's no single right answer — it depends on your trip, your device and what you need from your connection.
How much data do you need in Bali?
It depends on how you use your phone while travelling.
Light usage — messaging on WhatsApp, navigating with Google Maps, booking a Grab or Gojek, checking email and searching for restaurants — generally uses relatively little data. A smaller fixed-data plan may be plenty.
Heavier usage — posting Instagram stories, uploading TikTok videos, video-calling family, streaming music or video, sharing hotspot with a travel partner or doing remote work — uses significantly more. For heavier users, an Unlimited data* plan may offer better value and peace of mind.
*Subject to Fair Use Policy.
For a more detailed breakdown, read our complete guide on How Much Data Do You Need in Bali?.
Can I use an eSIM for Grab, Gojek, WhatsApp and Google Maps?
Yes — internet-based apps like Grab, Gojek, WhatsApp, Google Maps and translation apps can use mobile data supplied by a travel eSIM, subject to your plan and network conditions.
Having mobile data on arrival is genuinely useful in Bali: you can book a ride from the airport, navigate to your hotel, message your accommodation on WhatsApp, translate signs and menus, and look up restaurants and activities without hunting for free Wi-Fi.
Should you install your Bali eSIM before you fly?
Installing your eSIM before departure can make setup easier — you'll have your home Wi-Fi connection available and can take your time following the steps without pressure.
Activation conditions vary between products. Some eSIMs activate on first connection at the destination; others may behave differently. Follow the activation instructions supplied with your specific Roamza eSIM, and if you're unsure, check compatibility before you buy.
Bali eSIM or SIM card: our verdict
For many Australians taking a normal Bali holiday, a travel eSIM is the most convenient option — you can organise it before leaving Australia, keep your physical Australian SIM installed on compatible devices and avoid making a SIM-card shop one of your first stops after landing.
But a local SIM isn't a bad option. For longer stays, travellers who need an Indonesian number, or phones without eSIM support, a local prepaid SIM may make more sense.
The important thing is getting it sorted before you need mobile data.
Get connected before you fly.
Choose a Bali eSIM for your trip and have it ready before you leave Australia.
Roam without the roaming.
See our refund policy and coverage information for more detail.
Heading to Bali?
Get your Bali eSIM sorted before leaving Australia and use mobile data while keeping your Australian SIM installed.
VIEW BALI eSIM PLANSFrequently asked questions
Yes, provided your phone supports eSIM and is compatible with the selected plan. Check your device compatibility before purchasing.
On compatible dual-SIM devices, your Australian SIM can generally remain installed while the travel eSIM is used for mobile data. Check your device's dual-SIM capabilities before travelling.
Many travel eSIMs are data-only and don't include a local phone number. Check the specific plan details to confirm what's included.
Installing before you fly can make setup easier since you have your home internet available. Activation conditions vary between products, so follow the instructions supplied with your specific eSIM.
It depends on your needs. A travel eSIM can be convenient because it's organised before departure, while international roaming from your Australian carrier may suit travellers who prefer not to change anything on their phone. Compare your carrier's current roaming rates with eSIM pricing before deciding.