Questions about eSIM in Indonesia

An eSIM is a SIM that arrives as a QR code instead of a plastic card. You scan it at home on Wi-Fi and keep the line off until you land; in Indonesia, turn it on and choose it for mobile data. It runs on Telkomsel in Indonesia, and your usual SIM stays in the phone, so calls and texts to your own number keep arriving.

The one you can check before you pay: which Indonesian network it runs on, the data and the days, and the price in US dollars with tax. The plans here run on Telkomsel in Indonesia, are data only, cost from US$4.88 with tax, and are refunded in full if they do not work and cannot be fixed.

Yes. Pick a plan on VietSIM, the same company's store for Vietnam and Asia: this site's buttons open the store's Indonesia page, and the QR code appears right after payment. Install it at home on Wi-Fi before you fly.

Yes. A travel eSIM for Indonesia is bought online before you fly and installed at home on Wi-Fi, so nothing waits at an airport counter. The plans on this site are data only: each names its data, days and price in US dollars with tax on the store before you pay.

Its Indonesian network, Telkomsel; the data and the number of days; that it is data only; and the price in US dollars with tax.

The store shows the QR code on screen right after payment, and it asks you to save the page link: the code stays there. Install the eSIM within 30 days of buying it. If it does not work and cannot be fixed, you get a full refund.

Yes. The eSIM sits beside your usual SIM, which stays in the phone, so calls and texts to your own number keep arriving. WhatsApp keeps your number and uses the eSIM's data.

For arrivals by air and sea, yes: All Indonesia is the free official arrival declaration, filed at allindonesia.imigrasi.go.id or in the app within the 72 hours before you arrive. It returns a QR code to save and show to immigration and customs officials, and it is not a visa.

The rules depend on your nationality. For tourism, the UK advice describes a 30-day visa on arrival, applied for online at evisa.imigrasi.go.id or issued at the main airports and seaports, and it can be extended once, for another 30 days; check the official immigration site for your passport.

It is +62. From abroad, drop the first 0 of a number: 08xx xxxx xxxx is dialled +62 8xx xxxx xxxx. Inside Indonesia, dial the number as written, with its 0.

The rupiah, written IDR and shown as Rp: banknotes run from 1,000 to 100,000, and coins from 50 to 1,000. Cards work in hotels, large restaurants and large stores, and across the cities; cash matters in markets and remote places, and money is changed at banks or licensed money changers.

Most sockets take the round-pin European type C and F plugs, and the country runs on 230 volts at 50 Hz; a UK, US or Australian plug needs an adapter. A charger marked 100 to 240 volts works as it is.

Bali gets the same national advice, with notes of its own: bag-snatching and drink spiking are reported in the tourist areas, and moped accidents have risen, so wear a helmet and keep bags and phones secure. Emergency: 110 police, 118 ambulance, 112 fire.

Dial *#06#: the screen shows an EID when the phone has an eSIM. The phone must also be unlocked, not bound to the carrier it came from. Check before you buy: a refund does not cover a working eSIM just because the phone cannot install it.