Which Network Does Your Bali eSIM Actually Use? (2026)
Published UpdatedShare
📖 13 min read · By the Balitel team, Kuta, Bali · Reviewed by Sheila Theodora
The 30-Second Answer
Your eSIM brand does not own a network in Indonesia. It rents one.
There are three that matter: Telkomsel, Indosat, and XLSmart. Telkomsel is the country's largest operator with 153.5 million lines (June 2026), reaching over 97% of the population. Indosat has 93.4 million and reaches about 90%. That gap is almost entirely rural and eastern Indonesia.
So the question is not "which eSIM brand is best." It is "which network will this brand put me on, and does it reach where I am going?"
The uncomfortable part: we checked all 13 major brands. Only five will tell you.
Who we are, in one line
Balitel is an authorized Telkomsel retailer based in Kuta, Bali, operating under registered Telkomsel outlet 3301071729. We sell official Telkomsel tourist eSIM plans with a real Indonesian +62 number, register your device IMEI with the Indonesian government before you arrive, and send the QR code to your WhatsApp. Plans start at USD $14 for 10GB over 30 days. We are part of Diamond Handphone, trading in Bali since 1998, with five stores across Denpasar, Kuta, Seminyak and Canggu.
We are an authorized Telkomsel retailer, so we have an interest here — read the sources and check for yourself. The network list below was verified in August 2026 from provider websites and independent testing. Operator figures and test results were updated in October 2026.
Why This Matters More Than Price
Most Bali eSIM articles compare price and gigabytes. Almost none mention the network.
That is strange, because the network decides whether your phone works at all.
A $50 eSIM on a network with no tower near Amed is worth less than a $14 eSIM on one that has three. Gigabytes you cannot reach are not gigabytes.
How Big Is Telkomsel, Really?
If you have never been to Indonesia, these three names mean nothing to you. Most travellers assume they are interchangeable, like Vodafone and O2 at home. They are not.
There are three operators. That is the entire market.
| # | Operator | Lines | Who owns it |
|---|---|---|---|
| 1 | Telkomsel |
153.5 million June 2026 |
Telkom Indonesia, the state telecoms company (69.9%), and Singtel (30.1%) |
| 2 | Indosat Ooredoo Hutchison | 93.4 million June 2026 |
Ooredoo Hutchison Asia (65%), Government of Indonesia (9.6%) |
| 3 |
XLSmart XL and Smartfren, merged |
69.4 million June 2026 |
Axiata and Sinar Mas (34.8% each) |
Telkomsel has 64% more lines than Indosat.
Roughly half of all mobile lines in Indonesia are on it, and it has been number one for its entire existence.
Why the biggest one matters to a tourist
Not for prestige. For towers.
Indonesia is 17,000 islands stretched across 5,000 kilometres. Building coverage here is brutally expensive, and only the operator with the most subscribers can justify a tower somewhere with two hundred residents and a dive shop.
That is why the coverage numbers split the way they do: Telkomsel over 97% of the population, Indosat about 90%. Seven points does not sound like much until you notice the gap is almost entirely rural and eastern Indonesia — which is where you are going for the good stuff.
What independent testers found
We would rather point you at people with no reason to flatter Telkomsel. Two organisations measure mobile networks worldwide from real user devices. Here is what they published, newest first.
| Who | What they found | Where to check |
|---|---|---|
|
Opensignal, July 2026 report Measured April–June 2026 |
XLSmart won the most awards, including the fastest download speeds nationally. Indosat won Consistent Quality. Telkomsel kept the Coverage award by a wide margin: 8.6 out of 10, against 5.5 for Indosat and 4.8 for XL. In the Bali and Nusa Tenggara region, Telkomsel had the fastest everyday download speed. | Opensignal's July 2026 Indonesia report, free to read. |
|
Ookla Speedtest Awards 2026 Measured over Q3–Q4 2025 |
Five awards to Telkomsel: Fastest Mobile Network, Best Mobile Coverage, Best Mobile Video Experience, Best Mobile Gaming Experience, and Best Mobile Network | Ookla publishes country results at speedtest.net/awards. Telkomsel's own announcement is here. |
|
Opensignal, December 2025 report Measured August–October 2025 |
Telkomsel led on 11 experience metrics, covering download and upload speed, video and gaming quality, coverage, and 4G/5G consistency | Opensignal's Indonesia reports are free to read. Telkomsel's own announcement is here. |
Two of those links go to Telkomsel's own press releases, so they are the awarded party talking about itself. We have labelled them rather than pass them off as neutral. The Opensignal reports and Ookla's awards pages are published by the testers themselves and are the ones worth reading.
Ookla runs Speedtest, the app most people already have on their phone. Opensignal collects measurements continuously from millions of handsets. Neither sells SIM cards, and neither has any stake in which network you pick.
Why we are showing you this. You are about to buy a SIM card from a company you have never heard of, in a country you may never have visited, for a network whose name you did not know last week. "Telkomsel is good" from us is worth very little. "Best Mobile Coverage, Ookla, 2026" is worth rather more — and you can go and check it.
Being fair to Indosat and XLSmart
In earlier Opensignal reporting, Indosat — after merging with Hutchison — outperformed Telkomsel on some speed measures in rural areas and outside Java. We have cited that on this site and we are not going to delete it now that it is inconvenient.
The newest results moved again. In Opensignal's July 2026 report, XLSmart won the most awards, including the fastest download speeds, and Indosat won Consistent Quality. So the honest current position is: Indosat and XLSmart are genuinely good networks and lead on several speed and consistency measures. Telkomsel still leads clearly on coverage.
And coverage is the one that decides your holiday. A speed test only runs where there is already a signal. If there is no Indosat tower on the road to Sidemen, it does not matter how fast Indosat is somewhere else.
The Three Networks
| Network | Population covered | Best for | Weak spot |
|---|---|---|---|
|
Telkomsel Market leader |
Over 97% | Everywhere, especially rural and eastern Indonesia | Usually the priciest locally |
| Indosat (IOH, merged with Tri/3) | About 90% | Cities, Java, the main tourist corridor | Thins out past South Bali |
| XLSmart (XL merged with Smartfren) | Similar to Indosat | Cities and main roads | Gaps on the outer islands |
A note on the mergers. Indonesia had four big operators and now effectively has three. Indosat absorbed Tri in 2022, and XL merged with Smartfren to form XLSmart. This matters when an eSIM lists "Indosat and Tri" as two networks — they are one company.
Which eSIM Uses Which Network
Here is what we could confirm. We have marked how confident we are, because some of this is genuinely hard to pin down.
| Provider | Network in Indonesia | How sure are we? |
|---|---|---|
| Balitel (us) | Telkomsel — direct local line | ✅ Certain. It is our own product. |
| Airalo | Indosat and Tri (3) — not Telkomsel | ✅ Confirmed on Airalo's own Networks screen |
| Ubigi | Indosat Ooredoo, XLSmart on some plans | ✅ Confirmed on Ubigi's own partner list |
| Nomad | Telkomsel | ⚠️ Reported, not published by Nomad |
| Jetpac | Telkomsel | ⚠️ Reported, not published by Jetpac |
| Holafly | Varies — Telkomsel, XL, or Indosat | ⚠️ You do not get to choose |
| Saily | "Local partner networks" | ❌ Not disclosed |
| Maya | Not stated | ❌ Not disclosed |
| Yesim | Not stated | ❌ Not disclosed |
| GigSky | Not stated | ❌ Not disclosed |
| Sim Local | Not stated | ❌ Not disclosed |
| Simify | Not stated | ❌ Not disclosed |
| aloSIM | Not stated | ❌ Not disclosed |
| Roamless | Not stated | ❌ Not disclosed |
| ByteSIM | Not stated | ❌ Not disclosed |
Nine out of thirteen brands will not tell you which network you are buying.
That is the real finding here. You can see the price, the gigabytes, and the validity on every product page. The one thing that decides whether your phone works in Ubud is the one thing nobody publishes.
Why they do not say
It is not always sinister. Travel eSIM brands buy wholesale data and their partners change. If they publish "Telkomsel" today and switch to a cheaper supplier next quarter, they have a problem.
So they write "local partner networks" and leave it vague.
Understandable from their side. Not much help from yours. Airalo is the honourable exception — they list their Indonesian partners on a screen in their own app, which is where our Airalo row above came from.
How to Check for Yourself
You do not have to take anyone's word for it, including ours. Once an eSIM is installed and connected in Indonesia, your phone will show you the network name.
On iPhone: Settings → Mobile Service (or Cellular) → tap the eSIM line. The carrier name is at the top. You can also see it in the status bar.
On Android: Settings → Network and internet → SIMs → tap the eSIM. Look for the operator name.
You will see something like Telkomsel, INDOSAT, IM3, 3, or XL.
If you are inside a refund window and you do not like what you see, that is the moment to act.
What This Means for Where You Are Going
If your entire trip is Kuta, Seminyak, Canggu, and the airport, honestly any of these will work. Do not overthink it. Buy on price.
It changes the moment you leave that corridor.
| Where you are going | Does the network matter? |
|---|---|
| Kuta, Seminyak, Canggu, Denpasar | Not really — all three work |
| Central Ubud | Mostly fine on any network |
| Ubud valleys and rice terraces | ⚠️ Telkomsel noticeably better |
| Nusa Penida, Nusa Lembongan | ⚠️ Telkomsel — others are patchy |
| Amed, Sidemen, East Bali | ⚠️ Telkomsel |
| Munduk, North Bali, the waterfalls | ⚠️ Telkomsel |
| The fast boat and ferry crossings | ⚠️ Telkomsel holds signal longest |
| Gili Islands, Lombok | ⚠️ Telkomsel |
| Flores, Komodo, Sumba | ❗ Telkomsel, or accept being offline |
The Other Half: Roaming Guest vs Local Customer
There is a second difference that sits underneath all of this.
Even when a travel eSIM does put you on Telkomsel, you are on it as a roaming guest. We put you on it as a local customer with your own +62 number.
Two things follow from that.
Priority when a tower is busy. Networks can put roaming traffic behind local traffic during congestion. That is why a roaming eSIM can crawl at 7pm in Canggu while a local line keeps going. Airalo's own fair use policy acknowledges that underlying networks apply traffic management outside Airalo's control.
SMS. Roaming data plans have no Indonesian number, so Gojek, Grab, and QRIS verification codes never arrive. That has nothing to do with coverage and everything to do with what you can actually do once connected.
So Where Do You Actually Buy a Telkomsel eSIM?
You cannot buy one online from Telkomsel as a tourist. Their website sells eSIMs to Indonesian citizens, verified by national ID card and family card. Foreign residents with a KITAS permit must visit a service centre in person. Tourists hold neither document.
| Where | Who runs it | Sorted before you fly? |
|---|---|---|
| GraPARI service centre in Bali | Telkomsel themselves | ❌ In person only |
| Counters at Ngurah Rai airport | Third parties under Telkomsel branding | ❌ Queue on arrival |
| Authorized retailer — this is us | Licensed businesses like Balitel | ✅ Yes |
We are both an online store and a real shop in Bali
Most sellers are one or the other. The cheap SIM shops in Canggu are physical only — you have to land, find them, and pay cash. The international eSIM apps are online only — no local number, no IMEI registration, nobody to walk in and see.
We are both.
- Buy online before you fly. Order from home and send us your passport. The QR code arrives on your WhatsApp, so you can install it before you fly. Then switch the line on and send us a screenshot of the IMEI in the block where Carrier reads Telkomsel. On your arrival day we register your phone and switch on the line — even while you are still on the plane — so you land connected.
- Or come and see us. We are part of Diamond Handphone, trading in Bali since 1998, with five stores across Denpasar, Kuta, Seminyak and Canggu.
That second part matters more than it sounds. If something goes wrong with an app-only eSIM, you have a support ticket. If something goes wrong with ours, there is an actual shop with actual staff on an island you are already standing on.
👉 The full explanation of why tourists cannot buy Telkomsel directly
Frequently Asked Questions
Which is the largest mobile operator in Indonesia?
Telkomsel, with 153.5 million lines in June 2026. Indosat Ooredoo Hutchison is second with 93.4 million and XLSmart third with 69.4 million. Telkomsel is majority owned by Telkom Indonesia, the state telecoms company, with Singtel holding 30.1%. That gives Telkomsel around 64% more lines than Indosat, and coverage of over 97% of Indonesia's population against about 90% for Indosat.
Is Indosat the same as Telkomsel?
No. They are competing operators. Indosat Ooredoo Hutchison is Indonesia's second largest network with 93.4 million lines, while Telkomsel is the largest with 153.5 million (June 2026). In South Bali both perform well and most travellers would not notice a difference. Outside the main tourist corridor, in places like Nusa Penida, Amed, Sidemen, the Gili Islands and eastern Indonesia, Telkomsel's wider coverage becomes the deciding factor.
Is Telkomsel the best network in Indonesia?
It depends on the measure. Telkomsel has the widest coverage: Opensignal's July 2026 report scored it 8.6 out of 10 for coverage against 5.5 for Indosat and 4.8 for XLSmart, and it won five 2026 Ookla Speedtest Awards, based on Q3 to Q4 2025 data, including Best Mobile Coverage. In that same July 2026 Opensignal report, XLSmart won the most awards, including the fastest download speeds nationally, and Indosat won Consistent Quality. In the Bali and Nusa Tenggara region, Telkomsel had the fastest everyday download speed. For travellers leaving the main tourist areas, coverage is the measure that matters most.
Which network does Airalo use in Indonesia?
Airalo connects through Indosat Ooredoo and Tri (3), both of which are part of Indosat Ooredoo Hutchison since their 2022 merger. Airalo does not use Telkomsel. This is confirmed on the Networks screen inside Airalo's own app. It works well in Jakarta and South Bali but thins out on Lombok, the Gili Islands, Flores, Komodo, and Sumba.
Which network does Ubigi use in Indonesia?
Ubigi's Indonesia plans run on Indosat Ooredoo, with XLSmart on some plans. This is confirmed on Ubigi's own network partner list. Not Telkomsel.
Is Indosat as good as Telkomsel?
Indosat is a genuinely good network and has closed ground since merging with Hutchison. In Opensignal's July 2026 report it won the national Consistent Quality award and scored ahead of Telkomsel on reliability, while Telkomsel kept a wide lead on coverage, 8.6 out of 10 against Indosat's 5.5. The decisive difference for travellers is coverage rather than speed: a speed test only runs where there is already a signal, and Telkomsel has signal in more places.
How do I find out which network my eSIM is using?
Once the eSIM is installed and connected in Indonesia, check your phone. On iPhone go to Settings, then Mobile Service, then tap the eSIM line. On Android go to Settings, then Network and internet, then SIMs. The operator name will show as Telkomsel, INDOSAT, IM3, 3, or XL.
Why do eSIM companies not say which network they use?
Most travel eSIM brands buy wholesale data and their supply partners change over time. Publishing a specific carrier name would tie them to it. So they write "local partner networks" instead. Of the 13 major brands we checked, only five give a usable answer, and Airalo is the only one that lists its partners inside its own app.
Why does a Telkomsel eSIM need my passport?
Because it is a local Indonesian line, not a roaming one. Indonesian law requires every mobile number to be registered against a verified identity — citizens use an ID card, foreign residents use a KITAS, and tourists use a passport. Indonesia also requires foreign phones to have their IMEI registered before they can use a local network. We complete both for you before you arrive.
Can I buy a Telkomsel eSIM online before I arrive in Bali?
Yes, from an authorized retailer. Balitel operates both an online store and physical shops in Bali, so you can order before you fly, send your passport, and get the QR code on your WhatsApp before departure. You install it, switch the line on, and send us the IMEI shown in the block where Carrier reads Telkomsel. Balitel registers your phone and switches on the line on your arrival day — even before your plane lands — so you land already connected rather than queuing at the airport.
What is Balitel?
Balitel is an authorized Telkomsel retailer based in Kuta, Bali, operating under registered Telkomsel outlet 3301071729. It sells official Telkomsel tourist eSIM plans that include a real Indonesian +62 phone number, handles the passport and IMEI registration required by Indonesian law, and sends the eSIM QR code by WhatsApp before travelers arrive. Balitel is part of Diamond Handphone, a Bali mobile retail business trading since 1998 with five stores across Denpasar, Kuta, Seminyak and Canggu.
Does the network matter if I am only staying in Seminyak and Canggu?
Not much. Telkomsel, Indosat, and XLSmart all have strong coverage across South Bali. The network becomes important once you go to the Ubud valleys, Nusa Penida, Amed, the outer islands, or anywhere in eastern Indonesia.
Is a roaming eSIM on Telkomsel the same as a local Telkomsel line?
No. A roaming eSIM rides the network as a guest and has no Indonesian phone number. A local line gives you a +62 number that can receive SMS from Gojek, Grab, and Indonesian banks, and it is not deprioritised when a tower gets busy.
Our Honest Summary
We sell a Telkomsel product, so of course this page suits us. Read the sources and check your own phone once you land.
But the finding stands on its own. Nine of thirteen major eSIM brands will not tell you which Indonesian network you are buying, and it is the single thing that decides whether your phone works past the tourist corridor.
If your trip is South Bali only, buy on price and ignore all of this. If you are going to Nusa Penida, Amed, the Gilis, or anywhere east, find out what network you are on before you fly.
Networks change and providers switch wholesale partners without announcing it. Line counts are the operators' own reported figures for June 2026. Test results are from Opensignal's July 2026 and December 2025 Indonesia reports and Ookla's 2026 Speedtest Awards; links above, with Telkomsel's own press releases labelled as such. The network list is a snapshot of August 2026; operator figures and test results were updated in October 2026. If you find your eSIM on a different network than we listed, tell us and we will correct it.
More reading
- About Telkomsel: Indonesia's mobile networks, rules and IMEI explained
- Can I buy a Telkomsel eSIM online? Depends who you are
- Telkomsel eSIM not working? Eight fixes
- What a Telkomsel SIM really costs in Bali — 40+ shops priced
- Is Airalo good for Bali?
- Is Ubigi good for Bali?
- Is Holafly good for Bali?
