The short verdict
Singapore is a city-state 50 km wide. Every carrier — Singtel, StarHub, M1, and TPG — provides excellent 5G coverage everywhere. There is no rural, no mountain, no remote area. Coverage quality is identical across providers, so the only factor that matters is price. Flysimio is the cheapest option we found. Buy the cheapest plan with enough data and you are done.
Singapore eSIM comparison table (2026)
| Provider | Plan | Price | Network | Refund |
|---|---|---|---|---|
| Flysimio | 5 GB / 30 days | $4.75 | Singtel | 14-day full |
| Airalo (Singtel SG) | 5 GB / 30 days | $9.00 | Singtel | Unused only |
| Holafly | Unlimited / 7 days | $9.90 | StarHub | 24-hr unused |
| Nomad | 5 GB / 30 days | $7.00 | M1 | Unused credit |
| Saily | 5 GB / 30 days | $7.99 | Singtel | Case by case |
How much data do you need in Singapore?
| Trip length | Usage type | Recommended data |
|---|---|---|
| 2–3 days | Maps + transit + messaging | 1–2 GB |
| 4–7 days | Maps + social + browsing | 3–5 GB |
| 7–14 days | Regular use | 5–8 GB |
| Any length | Streaming + hotspot | Unlimited (Holafly) |
Installing your Singapore eSIM
- Buy before departure — install on home Wi-Fi.
- Open the Flysimio email for the QR code.
- iPhone: Settings → Cellular → Add eSIM → Use QR Code.
- Android: Settings → Network & Internet → SIMs → Add SIM.
- Scan the QR code. Done in under 30 seconds.
- Label it "Singapore" and set as data line.
- Your phone connects to Singtel when you arrive at Changi Airport (SIN).
Frequently asked questions
What is the best eSIM for Singapore?
Flysimio is the cheapest Singapore eSIM in 2026. Since all Singapore carriers (Singtel, StarHub, M1, TPG) have equivalent world-class 5G coverage everywhere on the island, price is the only differentiator. Flysimio offers 5 GB on Singtel at the lowest price we found.
Does eSIM work in Singapore?
Yes, perfectly. Singapore is a 5G-saturated city-state. Every carrier provides full indoor and outdoor coverage across the entire 728 km² of the island, including the MRT underground, shopping malls, Sentosa, and Changi Airport.
Which carrier is best in Singapore?
All four carriers (Singtel, StarHub, M1, TPG) are excellent in Singapore. Singtel is the largest and has the most infrastructure, but the performance difference in practice is negligible. Choose based on price, not carrier.
How much data do I need for Singapore?
For a 4–7 day trip with moderate use (maps, transit apps, social media, browsing), 3–5 GB is sufficient. Singapore's fast 5G network loads content quickly, which can actually increase data consumption without you noticing.
Does Singapore eSIM work in Malaysia or Indonesia?
No. A Singapore-specific eSIM works only in Singapore. For travel to Malaysia or Indonesia, purchase separate eSIM plans for those countries. If you are doing a Malaysia + Singapore trip, buy both separately.