01 / SIM
Telkomsel
Recommended SIM provider
SIM Cards & Connectivity
A good Sumba SIM operator that provides you with sufficient coverage is critical on a trip to this paradisiacal island. We strongly recommend Telkomsel for the best coverage across the island, especially in remote areas, beaches, and traditional villages. Order an eSIM online before arrival for the most convenient experience.
At a Glance
SIM Cards & Connectivity in Sumba
02 / ESIM
Airalo
Recommended eSIM provider
03 / DATA
5-10 GB
Recommended weekly data
for moderate use
Best Mobile Network Providers to Get a Sumba SIM (2026)
Telekomsel, XL Axiata and Indosat Ooredoo are three of the most preferred operators on Sumba Island.
Telkomsel (Recommended)
Indonesia's largest and most reliable network with the best coverage across Sumba Island.
Coverage in Sumba: Excellent coverage in Waingapu, Waikabubak, and major tourist areas. 4G/LTE available in main towns.
| Package | Price |
|---|---|
| 5GB (15 days) | $15–20 USD |
| 10GB (30 days) | $25–35 USD |
| 20GB (30 days) | $40–50 USD |
Indosat Ooredoo
Budget-friendly option, but coverage can be spotty in Sumba.
Coverage in Sumba: Basic coverage in main towns. Weak or no signal in remote areas and beaches.
| Package | Price |
|---|---|
| 5GB (30 days) | $10–15 USD |
| 10GB (30 days) | $20–25 USD |
XL Axiata
Good alternative with decent coverage in main population centers.
Coverage in Sumba: Good coverage in Waingapu and Waikabubak. Limited in remote areas.
| Package | Price |
|---|---|
| 5GB (30 days) | $12–18 USD |
| 15GB (30 days) | $25–30 USD |
eSIM Options (Digital SIM)
An eSIM is a digital SIM card embedded in your phone. With an eSIM, you don’t need a physical card. You can just digitally activatete it and start using your internet. It’s perfect for travelers as you can set it up before arriving and keep your home SIM active.
Two of the most popular eSIM operators in Sumba are:
Check eSIM Compatibility
Newer Android devices, as well as iPhone XS and newer models, support eSIM. Check your phone’s settings or manufacturer website to confirm compatibility before ordering.
How to Check Android eSIM Compatibility
Dial *#06#
First, dial *#06# from the contacts or phone application.
Press the call button
Once you press the button, a screen with barcodes will appear.
Check if you have an EID
Android devices that are eSIM compatible have a unique EID. Absence of this ID number indicates no eSIM support.
How to Check iOS eSIM Compatibility
Open Settings > General > About
Tap the Model Number until it changes to an AXXXX combination
Verify the origin of your model number
Visit the relevant Apple Support page to verify that your phone’s Model Number doesn’t match Mainland China, Macau or Hong Kong. If it matches Mainland China Model Number, your phone isn’t eSIM compatible.
Where to Get SIM Cards in Sumba
It is possible to get a SIM card at various places in Sumba. You can start looking at:
- Airports: While getting your Sumba SIM at the airport sounds tempting, remember that options will be limited and fares will be higher than other options.
- Phone Shops (toko HP): Phone shops in Waingapu and Waikabubak are the best bet for travelers seeking better prices on SIM cards. Staff usually doesn’t speak fluent English. Knowing a few phrases in the local language might help.
Good to Know
If you are planning to get an eSIM, the best practice is to order it before traveling to Sumba and set up before landing.
Places to Get SIM in Sumba
How Much Data Do You Need?
| Use Type | Typical Use | Data Needed |
|---|---|---|
| Light Use | WhatsApp, emails, occasional map | 2–5 GB per week |
| Moderate Use | Social media, maps, some photo sharing | 5–10 GB per week |
| Heavy Use | Video calls, streaming, sharing videos | 10–20 GB per week |
Tips to Stay Connected in Sumba
Telkomsel has the best coverage in Sumba, especially in remote areas and beaches
Download offline maps before traveling to remote areas—coverage can be spotty
4G/LTE is available in main towns, but expect 3G or no signal in remote villages and surf spots
Most luxury resorts have WiFi, but don’t rely on it in budget accommodations
Bring a power bank since charging options are limited when exploring remote areas
Check if your phone is eSIM compatible before ordering digital SIMs
WhatsApp works well for communication when you have signal
Consider buying extra data if you plan to share photos/videos or use maps extensively
You can contact authorities without a SIM/eSIM, in case of security or health-related emergencies.
FAQ
Frequently Asked Questions
Everything you need to know about SIM cards and ATMs
Can I buy a physical SIM card at a phone shop if I don't speak Indonesian?
Yes, but communication can be challenging. Bring a screenshot of the data package you want (e.g., “Telkomsel 10GB 30 days”) or ask your hotel staff to write down the request in Indonesian. A local guide can also help.
Do I need to register my SIM card with my passport in Sumba?
Yes, Indonesian law requires passport registration for all local SIM cards. Bring your passport to the phone shop. With eSIMs (e.g., Airalo), this registration is handled digitally by the provider.
What should I do if an ATM eats my card?
Stay at the machine and try to contact the bank using the phone number displayed. Most bank branches in Sumba have limited English support. It’s best to have a backup card and notify your hotel staff for assistance. This is another reason to carry enough cash from major towns.
Is it safe to use ATMs in Sumba at night?
It’s not recommended. Use ATMs during daylight hours in well-trafficked areas. Stick to ATMs inside bank lobbies when possible.