Using an eSIM in Kuala Lumpur

What Kuala Lumpur is like on a phone

Kuala Lumpur is both the region's transfer hall and a city people settle into for work. Visitors are usually surprised by how hard it is to walk here — the sun is fierce and pavements break off — so everyone moves to the urban rail and the covered walkways instead. Several overlapping rail systems mean you will have a routing app open a lot, and stations, elevated and underground alike, are generally usable. The trouble you actually meet is rush-hour density rather than any gap in coverage.

When you land

The gateways are KLIA and the KLIA2 terminal, a good way south of the city. Switch the line on before immigration, because you may need to open a confirmation email or a pre-submitted arrival form. Online entry-document requirements are revised from time to time, so check with the Malaysian immigration authority before every trip. An express train runs from the airport straight into KL Sentral, the interchange everything radiates from; on the way it crosses open country and passes through short tunnels where the signal stutters briefly.

Where coverage changes

Around the twin towers and the shopping district the signal is strong, with enough masts to carry the crowds. The newer underground stations through the city core work on the platform and while the train is in the tunnel. Where people do get caught out is the deep basement levels of the largest malls, where zones far from any opening weaken enough that a payment scan fails on the first try. On the staircase at Batu Caves north of the city you still have service on the steps, though it is a different matter deep inside the chamber, and the cable car up to Genting is unreliable while it hangs above the forest.

What a day here costs in data

A day here comes to roughly 1 to 2GB, because you check rail routes often and call a car whenever the heat makes walking unreasonable. English is widely spoken, so translation apps get far less use than in some neighbouring cities. Scanning to pay is common in shops and car parks but costs little. Anyone here to work, taking calls from a cafe or a co-working floor, will use several times what a sightseer does, since camera time is the variable that matters.

Districts travellers ask about

• Bukit Bintang — Shopping and eating, crowded every evening; strong on the street and in the elevated walkways, though the deeper basement floors of some malls are perceptibly weaker than the levels above.
• KLCC — The twin towers and the park at their feet; open ground keeps it comfortable, and it is where everyone photographs and uploads at the same hour after sunset.
• Chinatown and Merdeka — Old low shophouses and a covered market; the streets are fine, but along the long metal-roofed market aisles the speed is clearly lower than outside.
• Bangsar and Mid Valley — Residential streets and very large malls to the southwest; coverage is consistent, and it is a favourite base for remote workers because it is quieter than the centre.

Day trips out of the city

• Batu Caves — A short commuter train ride north; the coloured staircase and the forecourt behave normally, but inside the chamber under solid rock expect to send nothing until you walk back out.
• Genting Highlands — Drive or ride up the mountain, then take the long cable car to the top; suspended over forest the line is unreliable, and it returns at the summit where the buildings are packed together.
• Melaka — Two hours south by coach on an expressway with service the whole way; the riverside old town is comfortable, while the river cruise passing under low bridges stutters briefly at intervals.