Prepaid SIM Cards in Indonesia: Everything You Need to Know Before You Go

Getting Connected the moment you land in Indonesia is no longer optional — it is the difference between a smooth trip and a stressful one. Without data, you cannot summon a Gojek from the airport, navigate Jakarta’s sprawling streets, or book a last-minute ferry from Bali to the Gili Islands. In 2026, Indonesia’s mobile landscape has matured significantly, but the rules around SIM registration and IMEI requirements still confuse a surprising number of first-time visitors. This guide cuts through the noise and tells you exactly what to do before and after you land.

What Changed Since 2024: IMEI Rules and SIM Registration Explained

Indonesia’s IMEI registration policy has been the biggest source of confusion for tourists over the past few years. By 2026, the system has been refined and is generally smooth for short-stay visitors — but you still need to understand the basics.

Every phone has a unique IMEI number (dial *#06# to find yours). The Indonesian government uses this number to control which devices can legally operate on local networks. Here is how it applies to tourists:

• Staying less than 90 days (most tourists): When you buy a Tourist SIM at an official operator kiosk, the staff will register the SIM to your passport and perform a temporary IMEI registration for your device. This allows your phone to connect to Indonesian networks for up to 90 days on that SIM. No visit to customs, no import taxes. After 90 days, the SIM and the temporary registration both expire.
• Staying more than 90 days: You need to register your phone’s IMEI with Indonesian Customs (Bea Cukai) upon arrival. Bring your passport, boarding pass, and the device itself. Phones valued above USD 500 may attract import duties.
• All SIM cards require passport registration: This applies to every SIM purchased in Indonesia, whether at an airport kiosk or a city store. If a vendor does not ask for your passport, walk away — that SIM is likely unregistered and will be blocked.

The distinction between the tourist SIM pathway and the customs pathway is clearer in 2026 than it was in 2024, when many travellers faced unexpected phone blocks. Stick to official channels and you will have no issues.

The Four Main Operators: Which One Is Right for Your Trip?

Indonesia has four major mobile network operators. Each has strengths depending on where you are travelling and what you need.

Telkomsel

Telkomsel has the most extensive and reliable network in Indonesia, including remote areas, national parks, and smaller islands. If you are heading off the beaten path — trekking in Flores, visiting Komodo, or exploring interior Kalimantan — Telkomsel is the safest bet. Their tourist-oriented plan, sometimes branded as the Wonderful Indonesia Tourist SIM, typically includes around 25GB of data, 100 minutes of local calls, and 50 SMS for 30 days, priced between IDR 150,000 and IDR 250,000. Manage your account through the MyTelkomsel app or by dialling *363#. Official website: www.telkomsel.com.

Telkomsel also runs by.U, a fully digital brand aimed at tech-savvy users. You can order a physical SIM or eSIM through the by.U app and have it delivered to your accommodation in major cities. Data packages are flexible — for example, 10GB for 30 days at around IDR 50,000, or 25GB for 30 days at around IDR 100,000. Website: www.byu.id.

Indosat Ooredoo (IM3)

Indosat Ooredoo offers excellent coverage across Java, Bali, and major cities. Their Freedom Internet plans are data-focused and competitive — roughly 25GB for 30 days at IDR 100,000 to IDR 150,000. For short stays, their Yellow micro-packages (1GB for 3 days at IDR 5,000) are useful for topping up quickly. Manage via the MyIM3 app or dial *123#. Website: www.im3.id.

XL Axiata

XL Axiata has a strong 4G and 5G network in urban centres across Java and Bali. Their Xtra Combo Flex plans bundle data, calls, and SMS, often with bonus data for YouTube. A representative 2026 package: 20GB plus 5GB YouTube for 30 days at IDR 120,000 to IDR 180,000. XL also runs the AXIS youth brand, which tends to offer aggressive data pricing. Apps: MyXL and AXISnet. Website: www.xl.co.id.

Smartfren

Smartfren operates exclusively on a 4G LTE-A and 5G network, which means no 3G fallback. Speeds in urban areas are excellent, and their data pricing is often the most competitive of all four operators — around 30GB for 30 days at IDR 75,000 to IDR 100,000. The trade-off is limited coverage in truly rural areas. Smartfren also has the distinction of being one of the first Indonesian operators to offer eSIM, which is readily available at Smartfren Gallery stores. App: MySmartfren. Website: www.smartfren.com.

eSIM in Indonesia: How to Activate One Without the Hassle

eSIMs are increasingly popular with tourists because you can keep your home SIM in your phone for calls and SMS while using a local Indonesian data plan simultaneously. In 2026, all four major operators offer eSIM: by.U (Telkomsel), Smartfren, Indosat Ooredoo, and XL Axiata.

Before you assume an eSIM is the easiest route, check that your phone supports it. Most recent iPhone models, Google Pixel phones, and Samsung Galaxy flagship devices do. Budget Android phones often do not.

1. Visit an official operator store — a GraPARI for Telkomsel/by.U, a Smartfren Gallery, an Indosat Ooredoo store, or an XL Center.
2. Present your passport. Staff will register the eSIM plan to your identity.
3. You will receive a QR code. On your phone, go to Settings > Cellular/Mobile Data > Add eSIM and scan it.
4. Follow the on-screen prompts. Activation typically takes 5 to 10 minutes.
5. Test your connection before leaving the store.

The by.U app allows you to order and activate an eSIM without visiting a store in some major cities — a genuinely convenient option if you are already in the city and do not want to hunt down a kiosk.

How to Buy and Register a SIM Card Step by Step

The airport is the best place to buy your SIM — official kiosks are set up specifically for tourists, staff speak basic English, and they handle the IMEI registration on the spot. Here is exactly what to do:

1. Before you board: Confirm your phone is unlocked. Write down or memorise your IMEI number (dial *#06#). Download your preferred operator’s app while you still have your home data.
2. After clearing immigration and customs at Soekarno-Hatta (CGK) in Jakarta or Ngurah Rai (DPS) in Bali, look for official kiosks in the arrivals hall. Telkomsel, Indosat Ooredoo, and XL Axiata all have a visible presence.
3. Tell the staff your needs: how long you are staying and roughly how much data you expect to use. They will recommend an appropriate tourist plan.
4. Hand over your passport. Staff will scan or photograph it for mandatory registration. This is non-negotiable and takes about 2 to 3 minutes.
5. Wait for activation. The full process — SIM registration, IMEI temporary registration, and plan activation — takes about 5 to 15 minutes.
6. Pay in IDR. Airport kiosks accept cash. Some accept credit cards. Expect to pay between IDR 100,000 and IDR 300,000 for a solid tourist plan.
7. Test before you walk away. Open a browser, load a page, and make a quick test call if your plan includes minutes. Do not leave until you confirm it works.

If you miss the airport kiosks, head to any official operator store in the city — a GraPARI, Indosat Ooredoo Store, XL Center, or Smartfren Gallery. The process is identical. Indomaret and Alfamart convenience stores sell SIM cards too, but they are not set up for tourist IMEI registration, so use official stores for your first purchase.

Data Packages, Topping Up, and Checking Your Balance

Once your SIM is active, managing your data is straightforward. Most operators offer packages in three formats: daily, weekly, and monthly. Monthly plans give the best value per gigabyte. Some plans include bonus data for specific apps — YouTube, TikTok, or WhatsApp — which can be genuinely useful if you use those services heavily.

To check your remaining data and credit balance:

• Telkomsel: dial *888# or open MyTelkomsel
• Indosat Ooredoo: dial *123# or open MyIM3
• XL Axiata: open MyXL or AXISnet
• Smartfren: open MySmartfren

When you need to top up (locally called isi pulsa or beli paket), you have several options:

• Operator apps: The fastest method. Pay with a local debit card, international credit card, or e-wallet like GoPay, OVO, or DANA.
• Indomaret or Alfamart: These convenience stores are everywhere. Tell the cashier your phone number, the operator, and the amount. For example: “Pulsa Telkomsel lima puluh ribu” means IDR 50,000 Telkomsel credit. They will process it in under a minute.
• ATMs: Most BCA and Mandiri ATMs offer a top-up option under the payment or bill menu.
• Tokopedia or Traveloka: Both apps allow you to buy pulsa and data packages for any operator.

Network Coverage Across the Archipelago

Indonesia spans over 17,000 islands, so coverage is naturally uneven. Here is a realistic picture:

• Excellent (strong 4G/5G): Java, Bali, Lombok, and the major cities of Surabaya, Bandung, Medan, Makassar, and Palembang. You will have no connectivity issues here regardless of which operator you choose.
• Good to variable: Sumatra, Kalimantan, Sulawesi, and Flores (including Labuan Bajo). Coverage is reliable in towns but can drop to 3G or disappear entirely in rural or mountainous areas. Telkomsel leads in these transitional zones.
• Limited or unreliable: Very remote islands, deep interior regions of large islands, and some national parks. In places like the interior of Papua or isolated archipelagos, Telkomsel may have a faint signal where other operators have none. Download offline maps — Google Maps and Maps.me both work well — before you head into these areas.

2026 Budget Reality: What a SIM Card Actually Costs

Mobile data in Indonesia remains among the most affordable in Southeast Asia. Here is what to expect in 2026:

• Budget tier: IDR 50,000 to IDR 100,000. Gets you 10GB to 25GB on Indosat, XL, or Smartfren for 30 days. Perfectly adequate for maps, WhatsApp, and basic browsing.
• Mid-range tier: IDR 100,000 to IDR 200,000. The Tourist SIM sweet spot. Expect 25GB to 50GB of data, plus included local call minutes and SMS, valid for 30 days. Covers the needs of most travellers comfortably.
• Comfortable tier: IDR 200,000 to IDR 300,000. Telkomsel’s premium tourist packages or large-data combo plans. Best for travellers working remotely, using video calls frequently, or sharing a hotspot with travel companions.

Airport kiosks typically charge IDR 20,000 to IDR 50,000 more than city stores for the same package — a minor premium for the convenience of getting connected the moment you clear arrivals. It is worth it for most people.

WiFi as a Backup: What to Expect and When to Rely on It

WiFi in Indonesia’s tourist areas has improved considerably, but it is unreliable enough that you should not depend on it as your primary connection.

• Cafes and restaurants in Bali, Yogyakarta, and Bandung almost always offer free WiFi. Quality ranges widely.
• Hotels, guesthouses, and hostels provide WiFi almost universally, but speed varies significantly between budget and mid-range properties.
• Public WiFi is rare, slow, and not secure. Use a VPN if you connect to any public network for anything beyond casual browsing.

Think of WiFi as a supplement to your SIM card, not a replacement. For anything requiring reliable data — Gojek, Google Maps, Grab, real-time translation — you want your own connection.

Common Mistakes Tourists Make (and How to Avoid Them)

• Buying from a street vendor: Unregistered SIMs will be blocked within days. Always buy from official operator stores or kiosks.
• Not testing at the counter: Staff do occasionally make activation errors. Always open a browser and confirm internet access before walking away.
• Forgetting to bring cash to the airport: Not all airport kiosks accept international cards. Have IDR on hand. If you have none yet, buy a SIM after you have exchanged money or use an ATM in the arrivals hall first.
• Assuming hotel WiFi is enough: It never is when you actually need it.
• Choosing the cheapest SIM regardless of where you are going: Smartfren is great value in Bali. It is a poor choice if you are heading to rural Sulawesi. Match your operator to your itinerary.
• Not downloading offline maps: Especially important if you plan to travel outside Java and Bali. Download your destination’s offline map in Google Maps before you need it.

Frequently Asked Questions

Do I need to register my SIM card in Indonesia?

Yes. All SIM cards in Indonesia must be registered to a valid ID. For tourists, this means presenting your passport at the point of purchase. Official operator kiosks and stores handle this automatically. Any vendor that does not ask for your passport is selling an unregistered SIM, which will likely be blocked within days of activation.

Which operator has the best coverage in Indonesia?

Telkomsel has the most extensive network coverage across Indonesia, including remote islands and rural areas. For travellers staying on Java and Bali, Indosat Ooredoo and XL Axiata are strong alternatives with competitive pricing. Smartfren offers excellent urban speeds but a smaller footprint outside major cities.

Can I use an eSIM in Indonesia?

Yes. All four major operators — Telkomsel (via by.U), Indosat Ooredoo, XL Axiata, and Smartfren — offer eSIM in 2026. You need a compatible device (most recent iPhones, Google Pixels, and Samsung Galaxy flagships support eSIM) and a visit to an official operator store to complete passport registration and receive your QR code.

How much does a tourist SIM card cost in Indonesia in 2026?

Tourist SIM packages typically cost between IDR 100,000 and IDR 300,000 depending on the operator and data allowance. Budget plans of IDR 50,000 to IDR 100,000 exist but offer less data. Airport kiosks charge a small premium of IDR 20,000 to IDR 50,000 over city store prices for the same package.

What should I do if my phone does not work in Indonesia?

First, confirm your phone is SIM-unlocked — locked phones will not accept any Indonesian SIM. Second, check that your IMEI was registered when you purchased the SIM. If your phone was blocked, visit the operator store with your passport and SIM purchase receipt. If you stayed beyond 90 days, you may need to visit a Bea Cukai (customs) office to register your IMEI formally.

📷 Featured image by Maximus Beaumont on Unsplash.