Most travellers to Indonesia go to Bali: Ubud, Canggu, Uluwatu, plus trips to the Gilis and Lombok. Rides, scooters and delivery all run through apps, so you need data from the moment you land in Denpasar.
Networks and coverage
The largest operators are Telkomsel, Indosat Ooredoo and XL Axiata. Bali and Jakarta have solid 4G; small islands and mountains are weaker and coverage can depend on the operator.
eSIM, local SIM or roaming
A local SIM is bought on arrival, roaming without a package is expensive, while an eSIM takes a minute to buy from home: the QR code arrives instantly and your main number stays on for calls and texts. Worth knowing in Indonesia:
- Gojek and Grab are the main way to order a car, a scooter ride or food.
- Local SIMs are sold at the airport with a passport, and registration takes time.
- For several Southeast Asian countries a regional plan works well.
How to prepare before you fly
- Check eSIM support: dial
*#06#— if you see an EID line, you're good. - Install the eSIM at home over Wi-Fi. For most plans the clock starts at the first connection abroad; the exact rule is on the plan card.
- Set the eSIM as your mobile data line and turn on data roaming for it.
- Turn off data roaming on your main SIM so it doesn't spend money.
Step by step, with videos: How to install an eSIM on iPhone and Android.
Trip tips
- Install Gojek and Grab at home.
- Download an offline map before a volcano hike or a small-island trip.
- The translator in the ALO eSIM app helps at markets and pharmacies.
The ALO eSIM app also has a translator and a map: ask for directions, explain yourself at a pharmacy, find a café nearby.