Indonesia SIM Card: prices, operators and eSIM alternative in 2026

The Indonesia SIM card is no longer chosen the way it was three years ago. The Indonesian market used to have four major mobile operators. Now, only three truly distinct networks remain.

XL Axiata and Smartfren have merged to form XLSmart, an entity that began operations on April 16, 2025, with 94.5 million customers, representing approximately 25% of the Indonesian mobile market. In February 2026, the integration of the two networks reached 85%, with finalization targeted for June 2026. The XL, Smartfren, and Axis brands continue to be sold separately in stores, but they now rely on the same infrastructure.

Almost all French articles on the subject still list XL Axiata and Smartfren as two competing operators. This is outdated information that could lead you to buy the same thing twice.

Four brands share the SIM card operator market in Indonesia: Telkomsel, XL, Indosat Ooredoo, and Smartfren. Since the merger, XL and Smartfren belong to the same group, but their networks remain uneven on the ground, as shown by the measurements below.

Telkomsel is the best operator if your itinerary goes beyond Bali. It is also the fastest network in the country: it won the Ookla Speedtest award for the fastest 5G mobile network in Indonesia in the first half of 2025, with a median speed of 88.03 Mbps on 5G. Its Hyper 5G network covers 56 cities and districts, including Jakarta, Surabaya, Bandung, Medan, Makassar, Yogyakarta, and Denpasar in Bali.

In short: if you stay in major cities and tourist areas, any of the four will do. If you plan to visit Munduk, Sidemen, the Gilis, Lombok, or East Java, get a Telkomsel SIM card. The measurements below show why.

Operator brochures all promise nationwide coverage. The reality is better reflected in the measurements made by users themselves, which the nPerf platform continuously aggregates from their phones.

The statements below are dated September 1st, 2026, and are centered on Bali and western Lombok, the most frequented region in the country. They say nothing about Sumatra or Papua, but they allow for one useful thing: comparing the four networks in the same place, at the same time, on the same terrain. The discrepancies seen here can be found elsewhere in the archipelago.

On each card: blue for 2G, green for 3G, orange for 4G, red for 4G+, purple for 5G.

Telkomsel, the only truly national network

Unmatched coverage density: 4G+ follows every route, including those in the north and east where other networks fade away. Coverage even appears on sea crossings to neighboring islands. If your itinerary covers multiple regions, this is the answer.

XL, the best surprise in the comparison

The country's second-largest network in terms of these metrics, with 5G that reaches further inland than its main competitor's. Coverage thins out in rural areas of the west, but remains strong across all major transport routes. An excellent price-coverage compromise for an urban stay.

Indosat Ooredoo, correct on all fronts

The network follows the main routes without dropping, with a good proportion of 4G+. Its 5G remains concentrated in dense urban areas. Solid for a classic trip, less reassuring for traveling off the beaten path.

Smartfren, best reserved for cities

The comparison is undeniable: entire areas remain without any coverage, and what is covered is mostly via simple 4G. The introductory price is the lowest on the market, and so is the coverage. Avoid this if you are traveling.

This is the point where most travelers get ripped off. The price of an Indonesia SIM card depends much less on the carrier than on where you buy it: in Bali, the cost of a SIM card can vary from one to three times as much for the exact same mobile plan.

A few specific benchmarks noted in 2026 for these prepaid plans: the official Telkomsel tourist SIM card costs 150,000 IDR (approximately $9) for 25 GB of data and 25 minutes of calls over 30 days. At Indosat, you can find around 30 GB for about 100,000 IDR. An XL 3 GB starter pack for 30 days is priced around 35,000 IDR, which is less than $2.

The classic trap: in the Denpasar arrival hall, the same prepaid SIM card can be sold for two to three times its price, up to 350,000 IDR. You are paying for convenience, not data. Twenty minutes of scooter riding later, at an official shop, the same plan drops to 100,000 IDR.

Four types of points of sale exist for buying an Indonesia SIM card, and they are not all equal.

1. At Ngurah Rai International Airport: Telkomsel, XL, and Indosat stands welcome you right in the arrivals hall. Fast service, activation done right in front of you, but higher prices. Only to be considered if you land at night and absolutely need an immediate connection.
2. At an official GraPARI (Telkomsel) or XL Center store: the best local option for a Bali SIM card. These stores are everywhere in the south of the island (Kuta, Canggu, Ubud, Sunset Road, Mal Bali Galeria) and in all the major cities of Java. Displayed prices, correctly completed registration, and trained staff.
3. In a convenience store or small shop (Circle K, Alfamart, warung): prices are low, but your card registration is done in a rush. This is precisely where problems begin; we will return to this just below.
4. Online, before departure: you buy your eSIM from France, install it by scanning a QR code, and your connection activates automatically upon arrival. No store visits, no queues, no passport required.

A passport is mandatory

Indonesian law requires you to present your passport to activate a prepaid physical SIM card. SIM card registration is completed in the national system before it works, and this SIM card activation takes a few minutes in-store. No passport, no connection. A photo on your phone is not always enough; bring the original.

The IMEI law, in one minute

The real risk lies elsewhere: when a small shop incorrectly registers your IMEI, your phone can end up cut off after a few days, in the middle of your trip, without any easy way to fix it. This is the number one argument in favor of a travel eSIM, which is treated as roaming and requires no IMEI registration. You gain security: your line does not depend on a rushed manual entry.

Both solutions work. An eSIM is a virtual SIM card downloaded directly to your phone, whereas a physical card is inserted into the tray. They simply serve different needs.

Using an eSIM for travel is recommended for short stays of less than 30 days, which covers the vast majority of trips to Indonesia. It saves you from the queues at Ngurah Rai, negotiating in Indonesian, and the stress of a failed registration. Airalo and Ubigi offer plans for the country, as does voilà, with very different pricing philosophies that we compare below.

A local SIM card keeps two real advantages: it is more economical if you stay for a long time, and it gives you an Indonesian phone number, useful for booking a hotel, confirming activities like diving in Nusa Penida, or being called back by a Gojek driver. Note: a voilà travel eSIM works for data only; your calls go through WhatsApp, Signal, or iMessage.

Three economic models coexist in eSIM plans for Indonesia. Prices recorded on September 1, 2026, on official websites.

The breakdown is simple. For a two-week trip with normal usage, 20 GB is more than enough: Google Maps, WhatsApp, social media, and a few video calls all fit within this limit. You then pay $15.10 at voilà compared to $42.50 at Airalo and $46.90 at Holafly for 15 days of unlimited data. This price-to-quality ratio explains voilà's positioning: the displayed price is the final price, with no subscriptions or automatic renewals. Regarding the details of the competitor's plans, we have detailed what we think of Airalo after testing it.

Unlimited data is worth considering if you plan to stream continuously or work via hotspot all day long. For everything else, you are paying for comfort you don't use. Note that the Holafly eSIM offer only provides unlimited data, without volume-based plans. If you are still hesitating, our full review of Holafly covers this famous reduced speed.

The voilà Indonesia eSIM plans rely on the Telkomsel, XL, Indosat, and Smartfren networks, with data sharing included for the whole family and no blocked apps. TikTok, banking apps, and Google Maps work normally. If a question arises during your trip, voilà's human support responds 24/7, which makes all the difference at 3 AM Jakarta time.

The right amount of data depends on your usage, not just the duration. Here are some realistic guidelines.

Two useful habits. Remember to download your offline Google Maps plans before leaving; you can easily save 1 GB during a trip. And prioritize Wi-Fi in cafes and coworking spaces for large photo backups: in both Canggu and Ubud, it is often excellent.

Are you visiting multiple countries on the same trip? The Southeast Asia regional plan covers Indonesia, Thailand, Vietnam, and Malaysia with a single eSIM, without the need for reinstallation at every border.

With an eSIM, before departure:

1. Select the data volume corresponding to your stay and complete your purchase online.
2. Install the profile by scanning the QR code received via email, or activate it in one click from the app.
3. Once you've landed, switch your mobile data and roaming to the eSIM line: the local network will take over automatically.

With a local SIM card, upon arrival:

1. Go to an official GraPARI or XL Center store with your passport.
2. Save your card and check with the vendor that the network is working before leaving.
3. Note your new number and the top-up code; you'll need them to add data.

For a classic one to four-week stay in Indonesia, purchasing an eSIM before departure is the most rational choice: you are connected upon landing, you avoid IMEI registration, and you don't pay airport markups. Expect to pay $15.10 for a 20 GB 30-day eSIM plan at voilà, with human support reachable day and night if anything goes wrong.

Local SIM cards remain useful for long stays and when you need an Indonesian number. In this case, aim for Telkomsel at an official GraPARI store, never an airport stand, and keep your passport close at hand.