Destination

eSIM for Bali and Indonesia: mobile data on the islands

How to get online in Bali: coverage in Canggu, Ubud and Nusa Penida, local SIM vs travel eSIM, and what to know about IMEI registration if you’re staying a while.

Published September 23, 2026 · Updated October 1, 2026 · 8 min read · MoreSim editorial team

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The easiest way to get online in Bali is an Indonesia eSIM you install at home: mobile data comes on as soon as you land in Denpasar, and your home SIM stays in the phone. Canggu, Seminyak, Kuta, Nusa Dua and central Ubud usually have solid coverage; it gets weaker in the mountains, on boats and in the remote coves of Nusa Penida and Lombok. Local SIMs are registered with your passport, but if you’re staying long-term, a phone using one will need IMEI registration.

Where is mobile coverage good in Bali, and where is it weak?

Bali’s best mobile coverage is in the built-up south and the center of the island: Canggu, Seminyak, Kuta, Nusa Dua and central Ubud. The farther you get from tourist routes and the higher into the mountains, the more often the signal fades. Exact quality depends on the carrier, the street and even which part of the villa you’re sitting in.

• Canggu and Seminyak: dense, full of cafes and coworking spaces, mobile data is usually stable.
• Kuta, Jimbaran, Nusa Dua: resort areas with generally good coverage; on the cliff beaches of the Bukit Peninsula it can be weaker right by the water.
• Ubud: the network works fine in the center, but among the rice terraces and in river valleys the signal can dip.
• The north and the mountains: there’s coverage in Munduk and around the lakes, but it drops out in hollows and on forest trails.
• Mount Batur: on the sunrise hike the network comes and goes, and at the summit it depends on the weather and the carrier.
• The east coast and remote villages: coverage holds near the roads, with gaps away from them.

The Mount Batur sunrise hike starts at night, and your phone doubles as a flashlight, a camera and your line to the guide. Download an offline map of the area beforehand and bring a charged power bank: in the cold, and with the phone constantly hunting for a signal, the battery drains faster.

Is there mobile data on Nusa Penida, the Gili Islands and Lombok?

Nusa Penida, the Gilis and Lombok usually have mobile data at the ports, in villages and at popular beaches, but away from them coverage behaves differently than on Bali. On Nusa Penida the network may vanish on the road to the far viewpoints and in the coves below the cliffs. The Gili Islands generally have a network, but in the evening, when everyone posts the sunset at once, speeds can drop. Lombok is big: coverage is fine in towns and at popular beaches, and patchy in the remote southern coves and on the way to Mount Rinjani.

The most predictable dead zone on an island-hopping route is the crossing itself. On a fast boat between the islands, the network usually holds near the shore and disappears in open water. If your guesthouse host is meeting you at the pier, arrange it before you sail, not en route.

Local SIM or eSIM for Bali?

For a vacation in Bali an eSIM installed at home is more convenient, while a local SIM makes sense if you need an Indonesian number or you’re staying a long time. Local SIMs are sold at the airport, at carrier stores and in small shops, and they’re registered with your passport. The upside is an Indonesian number for calling local numbers and for some services. The downsides are a queue after a long flight, swapping out your physical SIM and IMEI registration for longer stays.

A MoreSim eSIM works differently. You buy the plan on the website or in the @moresim_bot Telegram bot, and the QR code arrives in the chat in about 30 seconds. The profile goes on as a second line: your home SIM stays in the phone, and bank codes reach your number if your carrier supports roaming in Indonesia. The plan starts counting on its first connection to a network in your destination, so it’s easiest to install the eSIM at home on your own Wi-Fi.

MoreSim plans are data-only, with no phone number. You can reach your villa host, driver or family over messaging apps where they aren’t restricted, and bank texts keep arriving on your home SIM. The plan covers all of Indonesia, not just Bali, and the coverage list is on the plan card.

In Bali, rides and food delivery are mostly booked through apps. They need a stable connection, and when you sign up the app may ask for a text code, which is easy to receive on your home number since it stays active on the second line.

Do you need to register your phone’s IMEI in Indonesia?

IMEI registration in Indonesia matters if you use a local SIM for a long time; phones running on a home SIM or foreign eSIM while roaming aren’t covered by the rule. According to 2026 travel guides citing Indonesian customs, when you buy a tourist SIM with your passport at a carrier store, the phone’s IMEI is added to the registry and it works on local networks with that SIM for up to 90 days.

To use an Indonesian SIM for longer, you register the phone with Indonesian customs (Bea Cukai), either at the airport counter or online, within a set period after arrival. If the phone you brought is worth more than the duty-free allowance, you pay duty and tax when registering. The rules for tourists get revised from time to time, so before a long stay check them on the Indonesian customs website or with the carrier when you buy the card.

Is mobile data enough for remote work in Bali?

In Bali, mobile data works best as a backup for remote work. Canggu, Ubud and Seminyak have plenty of coworking spaces, but even good Wi-Fi goes down sometimes, thanks to a downpour, a power cut or an overloaded network at rush hour, and you can’t just cancel a team call when that happens.

• Keep mobile data as a backup to your coworking or villa Wi-Fi.
• Hotspot terms for a laptop are on the plan card, so check them before you buy.
• Turn off auto-updates and cloud sync on your laptop while tethering: they eat data fast.
• Before an important call, find the spot in your villa or cafe with the strongest signal.
• If you move around, test the coverage in a new area before settling there for a while.

How much data do you need in Bali?

In Bali, maps, rides and messaging use little data, while video, stories and laptop work use a lot, so pick your allowance to match how you travel. The MoreSim Indonesia catalog covers everything from a short vacation to a whole winter, and the data and validity options are on the country’s catalog page.

If you run out before the plan ends, use “Top up data” on the eSIM card in your account or in the bot’s app, if top-ups are available for that plan. You don’t need a new eSIM, because the data is added to the profile you already have. A winter in Bali usually lasts longer than a month, so ask support before your trip how to keep your data going once the plan’s term ends.

A classic question from Bali comes from the boat to the Gilis: the data’s gone, what do I do? Nothing, it’ll come back near the shore. Download maps and save your bookings before you sail, and those gaps won’t spoil your trip.