Find Your Plan in 30 Seconds
Bottom line: For trips under 5 days, go with an eSIM (Klook or Airalo—install at home, use on arrival); for 7–14 days or if you need a local number, buy a Telkomsel physical SIM at the airport (best coverage); for stays over 30 days, head to a Grapari store for the most cost-effective plan. No fluff—see which traveler you are:
| Scenario | Recommended Plan | Reason |
|---|---|---|
| Under 5 days, don’t want to swap cards | eSIM (Klook or Airalo) | Install at home in Taiwan, use on arrival |
| 7–14 days, need a local number | Buy Telkomsel physical SIM at airport | Best coverage, works in remote areas |
| 3+ people traveling together, sharing one | One Telkomsel SIM with hotspot | Cheapest per person when splitting cost |
| Staying 30+ days | Get a formal SIM at Grapari store | Monthly plans are more affordable |
Quick action: If you’re leaving within 5 days, grab Klook Bali SIM/eSIM right here—install it at home before you go.
Here’s the full guide for those who want to dive deeper.
Indonesia’s Top 3 Telecoms Compared—From a Traveler’s Perspective
Telkomsel (Best Coverage, Top Pick for Travelers)
Indonesia’s largest telecom, with about 55% market share. Across Bali—including remote villages like Amed, Munduk, and Sidemen—Telkomsel’s 4G signal is the most reliable among the three.
- 4G/5G Status: Full 4G coverage from Kuta to Nusa Dua in major tourist areas, with 5G spots in central Ubud.
- Most Popular Plan: Perdana Tourist SIM (prepaid SIM card) is essentially the Telkomsel Tourist SIMPATI (priced around IDR 250,000–350,000 at the airport, with 15GB–35GB data). You can often buy it at city phone shops for 1/2 to 1/3 of the price.
- Nusa Penida Signal: The strongest among the three, with stable 4G from the harbor to major attractions.
- Gili Islands Signal: Gili Trawangan has signal, Gili Air is weaker, and Gili Meno experiences occasional dropouts.
- Downsides: About 30–40% more expensive than Indosat, and airport booths often inflate prices.
simPATI is a brand under Telkomsel, using the same network—no need to distinguish them.
Indosat Ooredoo / IM3 (Best Value for Money)
Over 30% cheaper than Telkomsel, with sufficient signal in urban tourist areas like Kuta, Seminyak, and Sanur.
- 4G Status: Works fine in major tourist zones, but drops to 3G or no signal in remote areas like Amed and Munduk.
- Popular Plan: Freedom Internet plan, IDR 50,000–80,000 for 10–20GB.
- Best For: Travelers sticking to Kuta and central Ubud, avoiding remote locations.
XL Axiata (Fast in Cities, Weak in Remote Areas)
4G speeds in Seminyak and Kuta sometimes surpass Telkomsel, but coverage has very clear boundaries.
- Biggest Issue: Extremely poor signal on Nusa Penida, with no signal at some attractions.
- Why It’s Not Recommended: Signal optimization is focused on cities; it becomes unstable just outside core tourist zones.
- Only Suitable For: Those staying solely in Kuta and Seminyak, with high signal demands and no island trips.
Quick Verdict on the Three Carriers: If your itinerary isn’t limited to the city center, go with Telkomsel.
Complete eSIM Plan Comparison (2026 Major Brands)
Five Major Brand Comparison Table
| Brand | Sample Plan (Indonesia) | Hotspot Sharing | Unlimited Data | Taiwan Credit Card | Chinese Support |
|---|---|---|---|---|---|
| Klook eSIM | 5 days 1GB–10GB | ✅ | Some plans | ✅ | ✅ Chinese customer service |
| Airalo | 7 days 3GB–10GB | ✅ | ❌ | ✅ | ❌ English |
| Holafly | Daily unlimited data | ❌ Not shareable | ✅ | ✅ | ❌ English |
| Saily | 7 days 3GB+ | ✅ | ❌ | ✅ | ❌ English |
| Nomad | 30 days 10GB+ | ✅ | ❌ | ✅ | ❌ English |
Best Use Cases for Each Brand
Klook eSIM — Best for first-time eSIM buyers. Purchase through the Taiwan website, with a traditional Chinese interface and Chinese customer support, making communication easy if issues arise. Flexible data plans, with 5 days 3GB costing around USD$8–11, offering value comparable to Airalo. 📎 Klook Bali SIM/eSIM
Airalo — The most transparent pricing and widest range of plans, but customer service is entirely in English. Best for travelers with eSIM experience who are comfortable with an English interface. The Indonesia card uses the Telkomsel network, ensuring reliable quality.
Holafly — Unlimited data plans, ideal for heavy streaming. However, hotspot sharing is not allowed, so if you need to share with travel companions, this brand is out.
Saily** / Nomad** — For long trips (14–30 days) or multi-country itineraries, these two brands offer more cost-effective long-term plans.
Final Recommendations
- Top pick: Klook eSIM (Chinese support, flexible plans, Taiwan credit cards)
- Unlimited data needs: Holafly (but remember, no hotspot sharing)
- Budget-friendly for long trips: Airalo or Nomad
Where to Buy a Physical SIM Card – Complete Guide
1. Buy at Bali Airport (DPS)
Most convenient, but also the most traps.
Location: After clearing customs in the arrival hall, you’ll find official Telkomsel and Indosat booths near the baggage carousels, along with plenty of unofficial vendors.
⚠️ Scam Alert – This Is Important
Here’s what Klook blogs and eSIM brand articles won’t tell you:
- Fake “installation fee” (installasi fee): Vendors may ask for IDR 200,000–800,000 as a setup fee—this is a scam. Official SIM cards auto-configure when inserted; no manual installation fee is needed.
- Upselling expensive plans with the “best package for tourist” pitch: Politely decline and ask for the standard Kartu Perdana (prepaid card) plan instead.
Safe approach:
- Choose an official booth (with a Telkomsel or Indosat sign, not a small roadside table)
- After inserting the card, dial *888# to check your balance and confirm activation
Installation steps (DIY):
- Make sure your phone is unlocked (SIM-locked phones cannot switch cards).
- Locate the SIM card slot and use the ejector tool to remove the original card.
- Insert the new SIM card and restart your phone.
- If the network isn’t set automatically, go to APN settings and enter the details manually (see the tutorial below).
By the way: For transportation from the airport to your accommodation, check out Arriving in Bali: Airport Transfer Options and Practical First-Day Tips, which compares private car hire, taxis, and ride-hailing services.
2. Buying at Local Convenience Stores
Indomaret and Alfamart are on almost every street, and most branches sell prepaid SIM cards.
- Purchase process: Tell the staff “mau beli kartu perdana Telkomsel,” show your passport, and they’ll register it in the system.
- Price: Usually 20–30% cheaper than at the airport, but with fewer data plan options.
- Note: You need the original passport (a copy sometimes works), and minors cannot purchase.
- Recommended for: When you’re not in a rush, want to compare prices, or the airport counter has a long queue.
Keep in mind that many staff in tourist areas are now quite used to handling SIM cards for foreign travelers. However, there’s a common pitfall for tourists: Not every convenience store can complete the passport registration for you! After you buy:
- The SIM card may not work.
- You’ll have to register it yourself.
- Or visit an official store to sort it out.
Especially for foreign passport registration, some staff really aren’t familiar with the process.
3. Buying at an Official Grapari Store
Grapari is Telkomsel’s direct service center, ideal for long-term travelers or those who need help with account issues.
- Location: Kuta, Denpasar, and Ubud each have a storefront. Search “Grapari Telkomsel” on Google Maps.
- Required Documents: Original passport, personal contact information.
- Pros: Monthly plans available (more cost-effective for stays over 30 days), on-site customer service.
- Cons: You’ll need to take a number and wait, possibly 30–60 minutes.
4. Official Telecom Store Map
Gobaligo has compiled the official direct-sale store locations for Telkomsel, Indosat, and XL across various areas of Bali, including addresses, business hours, and route guidance—so you can avoid being overcharged by unofficial street vendors.
📍 Bali Telecom Official Store Map
Complete Installation Guide
iPhone eSIM Installation
Method 1: QR Code Scan (Most Common)
- After purchasing the eSIM, get the QR Code image from the Klook / Airalo app.
- Go to your phone’s “Settings → Cellular → Add eSIM.”
- Select “Use QR Code” and scan the image.
- Set up your “Primary SIM” (Taiwan number) and “Travel SIM” (Bali eSIM), assigning voice/data as needed.
Method 2: Manual Activation Code Entry
- If scanning fails, select “Enter Details Manually.”
- Enter the SM-DP+ address and activation code (found in your purchase confirmation email).
Common Mistakes:
- “Cannot add mobile plan”: Make sure your phone is unlocked and running iOS 12.1 or later
- eSIM installed but no signal: Check if the activation code has already been used (each QR Code can only be used once)
- Screenshot of QR Code won’t scan: Use the Klook App to display it directly—don’t screenshot and scan
Android eSIM Installation
The steps vary by brand; here’s an example using Samsung:
- Settings → Connections → SIM Card Manager → Add Mobile Plan
- Scan the QR Code or enter it manually
- Once done, you can switch between your main SIM and eSIM
Note: Some Android phones (mainly US carrier versions) have eSIM functionality locked. Check before purchasing.
Check if your phone supports eSIM
Physical SIM Card Installation + APN Settings
If automatic setup fails after swapping the SIM, manually configure APN as follows:
| Carrier | APN Name | Username | Password |
|---|---|---|---|
| Telkomsel | internet | (blank) | (blank) |
| Indosat IM3 | indosatgprs | (blank) | (blank) |
| XL Axiata | internet | (blank) | (blank) |
iOS Setup Path: Settings → Cellular → Cellular Data Network → APN field Android Setup Path: Settings → Connections → Mobile Networks → Access Point Names (APN) → Add
Common Errors:
- Still shows E/2G after setup: Restart your phone and wait 2–3 minutes for the network to reconnect
- APN field is grayed out: Your phone may be carrier-locked; unlock it before swapping SIM cards
Dual SIM Setup for Keeping Your Taiwan Number
Use a Bali SIM for data while keeping your Taiwan number for calls:
- Set your Taiwan SIM as the ‘Voice’ card and turn off its mobile data (to avoid roaming charges)
- Set your Bali SIM as the ‘Data’ card
- If your Taiwan SIM supports Wi-Fi Calling, enable it so calls to your Taiwan number can be answered via Wi-Fi (completely free)
Cost Comparison Table (May 2026)
Here’s a comparison of actual costs for each plan:
| Plan | Type | Duration | Data | Price (IDR) | Notes |
|---|---|---|---|---|---|
| Klook Telkomsel eSIM | Indonesia eSIM | 7–30 days | Mostly unlimited/slowed after high speed | 120,000–280,000 | Convenient, can install in advance |
| Airalo Indonesia eSIM | eSIM | 7 days | 3GB | ~145,000 | Uses Indonesia partner network |
| Airalo Indonesia eSIM | eSIM | 30 days | 10GB | ~355,000 | Stable but not cheap |
| Holafly Indonesia eSIM | eSIM | 5 days | Unlimited | ~320,000 | Hotspot sharing limited |
| Holafly Indonesia eSIM | eSIM | 10 days | Unlimited | ~520,000 | Best for heavy users |
| Airport Telkomsel Tourist SIM | Physical SIM | 30 days | 15–30GB | 120,000–220,000 | Best signal |
| Airport Indosat (IM3) SIM | Physical SIM | 30 days | 16–30GB | 100,000–299,000 | Great value in city areas |
| City Telkomsel Official Store | Physical SIM/eSIM | 30 days | ~18GB | ~75,000–120,000 | Much cheaper than airport |
| City Indosat Official Store | Physical SIM/eSIM | 30 days | ~30GB | ~99,000–150,000 | Ideal for long stays on a budget |
Signal Test — Ratings by Area in Bali
The following ratings are based on field tests by the Gobaligo team. Rating scale: ⭐ = signal but slow, ⭐⭐⭐ = stable 4G, ⭐⭐⭐⭐⭐ = fast 4G/5G.
Main Tourist Areas
| Area | Telkomsel | Indosat | XL |
|---|---|---|---|
| Kuta | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Seminyak | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Ubud (Town Center) | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐ |
| Sanur | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐ |
| Jimbaran | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐ |
| Nusa Dua | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐ |
| Canggu | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ |
Remote Areas
| Area | Telkomsel | Indosat | XL |
|---|---|---|---|
| Amed (East Coast Diving Area) | ⭐⭐⭐ | ⭐⭐ | ⭐ |
| Munduk (Northern Mountain Village) | ⭐⭐⭐ | ⭐⭐ | ⭐ |
| Sidemen (Eastern Mountain Village) | ⭐⭐⭐ | ⭐⭐ | ⭐ |
| Nusa Penida (Offshore Island) | ⭐⭐⭐⭐ | ⭐⭐ | ⭐ |
| Nusa Lembongan | ⭐⭐⭐ | ⭐⭐ | ⭐⭐ |
Mountain / Special Locations
| Area | Telkomsel | Notes |
|---|---|---|
| Kintamani Crater | ⭐⭐⭐ | Signal at viewpoint |
| Batur Volcano Trail | ⭐⭐ | Intermittent at summit |
| Lempuyang Heaven’s Gate | ⭐⭐⭐ | OK at main temple |
| Gili Trawangan | ⭐⭐⭐ | Strong at harbor, weak inland |
| Gili Air | ⭐⭐ | Intermittent, backup Wi-Fi recommended |
| Gili Meno | ⭐ | Almost no data |
Key Takeaways:
| Type | Recommendation |
|---|---|
| Most Reliable Signal | Telkomsel |
| Cheapest | Indosat IM3 |
| Most Convenient | Airalo / Holafly |
| Best Value | Buy Telkomsel at an official store in town |
| Ready on Arrival | Klook eSIM |
Common Disasters & Instant Fixes
| 區域 | Telkomsel | 備註 |
|---|---|---|
| Kintamani 火山口 | ⭐⭐⭐ | 觀景台有訊號 |
| Batur 火山步道 | ⭐⭐ | 山頂訊號斷續 |
| Lempuyang 天堂門 | ⭐⭐⭐ | 主廟區 OK |
| Gili Trawangan | ⭐⭐⭐ | 碼頭強，內陸弱 |
| Gili Air | ⭐⭐ | 斷續，備用 Wi-Fi |
| Gili Meno | ⭐ | 幾乎無數據 |
關鍵結論：
| 類型 | 推薦 |
|---|---|
| 訊號最穩 | Telkomsel |
| 最便宜 | Indosat IM3 |
| 最方便 | Airalo / Holafly |
| 性價比最高 | 市區官方店買 Telkomsel |
| 落地立即能用 | Klook eSIM |
常見災難與即時解法
Signal Suddenly Lost
- First, check if the APN settings have been cleared (toggling Airplane Mode on and off can sometimes reset the APN)
- Dial *888# to check your data balance; if it’s zero, you’ll need to top up
- For Telkomsel, you can buy a voucher at Indomaret—just tell the cashier “isi ulang Telkomsel XXX ribu”
eSIM Activation Failed
- Make sure you have a stable Wi-Fi connection when installing (a Wi-Fi network is required to download the eSIM profile)
- Each QR Code can only be used once. If you’ve switched phones, contact the eSIM brand’s customer service for a new code
- Klook eSIM users can reach Chinese-speaking support directly in the app; replies usually come within an hour
How to Top Up When Data Runs Out
- Physical SIM: Buy a voucher at Indomaret or Alfamart, or top up via GoPay or Dana
- eSIM: Return to the purchase platform and buy a new one (most eSIMs don’t support direct add-ons—just purchase a fresh eSIM)
What to Do If You Switch Phones
- Physical SIM: Simply remove it and insert it into your new phone (make sure the new phone is unlocked)
- eSIM: You’ll need to delete the profile from your old phone, then scan the QR code again on the new one (some brands support this; Klook customer service can help)
Do I Need to Turn It Off After Returning to Taiwan?
- Physical SIM: Just remove it. Indonesian numbers usually deactivate automatically after 90 days of no use
- eSIM: You can delete the eSIM profile from your phone, or keep it as a backup (it will take up one eSIM slot)
- Important: After returning to Taiwan, make sure your Taiwan SIM is set as the primary data source to avoid roaming charges from your Bali SIM
FAQ
Is Bali eSIM the same as Indonesia eSIM? Yes, Bali is part of Indonesia, so buying an Indonesia eSIM works across the entire island with no regional restrictions. Some brands label their plans as “Indonesia,” covering all areas including Bali, Java, and beyond.
Can I share a hotspot from one eSIM with travel companions? Most eSIMs (including Klook eSIM and Airalo) support hotspot sharing, but Holafly’s unlimited plans explicitly prohibit it. Always check the plan terms before purchasing to avoid issues.
I don’t speak English—can I buy a SIM at the airport counter? Official Telkomsel and Indosat counters at the airport offer English service, and you can also use a translation app to communicate. Just state the number of days and your approximate data needs—staff are used to handling travelers. Stay alert during the transaction; see the scam warning section in this article for details.
Is it safe to buy an eSIM online with a credit card? Klook, Airalo, and Holafly are globally recognized platforms that use HTTPS encryption for transactions, making them as secure as any standard online purchase. Consider using a credit card with no foreign transaction fees (like Richart) for the purchase.
Which is more cost-effective: a Wi-Fi hotspot or a SIM card? For trips of 5 days or less with 3+ people, a Wi-Fi hotspot divided per person might be cheaper. But for trips longer than 5 days, or with 1–2 people, a SIM card or eSIM is almost always more affordable—and you won’t have to worry about the hotspot’s battery life. See our full comparison here.
For group travel, is eSIM or a physical SIM more cost-effective? For 2 people, buying separate eSIMs is the easiest. For 3+ people, one Telkomsel physical SIM with hotspot sharing is the cheapest option (one IDR 120,000 SIM split three ways costs around USD$4 per person). But hotspot sharing drains battery faster, so bring a power bank.
Will I have signal on Gili Trawangan? Telkomsel has 4G signal near the Gili Trawangan dock, but coverage is spotty inland. Signal on Gili Air and Gili Meno is extremely weak and unreliable. Most accommodations offer Wi-Fi, so use that for important communications.
Can I install an eSIM before clearing customs at the airport? Yes. eSIM installation requires Wi-Fi, and airport lounges offer free Wi-Fi. It’s best to install the eSIM profile before leaving Taiwan, setting the activation time so it activates upon arrival in Indonesia. That way, once you land, switch to airplane mode to disable your Taiwan SIM, and the eSIM will be ready to use immediately.
Can I buy a physical SIM card with a photocopy of my passport? Official regulations require the original passport, but some stalls accept a photo of your passport displayed on your phone. It’s best to carry your original passport or keep a high-resolution scan saved in your phone’s gallery as a backup.
Are Telkomsel and simPATI the same? Yes, simPATI is a prepaid brand under Telkomsel, using the exact same Telkomsel network towers—no difference in signal or coverage. Tourist SIMs sold at the airport are mostly branded as simPATI or Kartu As, so there’s no need to distinguish them.
Can I still use my Indonesian SIM card after returning to Taiwan? Technically yes, but the rates are based on Indonesian telecom roaming, which is very expensive. After returning to Taiwan, immediately switch back to your Taiwan SIM or disable mobile data on the Indonesian SIM to avoid unexpected charges.
Can I still make calls if my data runs out? For Telkomsel and Indosat prepaid SIMs, voice call and SMS balances are separate from data. If your data runs out but you still have voice credit, you can still make voice calls (to local Indonesian numbers).
Summary & Action Guide
If you’re leaving now:
- 5 days or less, or don’t want to swap SIMs → Buy Klook Bali SIM/eSIM now and install it in Taiwan before departure
- 7+ days and need a physical SIM → Go to the official Telkomsel booth at the airport, price IDR 80,000–120,000; if they try to overcharge, just go to another booth
- Have other questions → Feel free to ask in the Bali Q&A section
Guides you might need next:
- Complete Bali Airport Transfer Guide — How to get to the city after customs
- Bali Currency Exchange Guide & Recommended Money Changer Map — Tips to avoid getting ripped off
- Bali Private Car Hire Guide & Cost Reference — Pricing for Ubud, waterfalls, sunrise tours
- Complete 7-Day Bali Itinerary Guide — From the airport to your last day
📍 Bali Telecom Official Store Map — Locations, addresses, and opening hours of Telkomsel / Indosat / XL flagship stores by area.
2026 Bali Ultimate Travel Guide: First-Timer’s Must-Read Cheat Sheet
