Singapore · roaming cost calculator
How Carrier Roaming Fees Stack Up Against eSIM Prices in Singapore
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eSIM plans for Singapore: price and coverage data
Airalo's Singapore eSIM uses Singtel's 5G towers — the same infrastructure AT&T roaming relies on. A 5GB plan at $0.74/GB covers most week-long trips for navigation, messaging, and social media.
Get eSIMHolafly connects to Singtel in Singapore for unlimited data. Remote workers and streamers avoid per-GB tracking on longer stays — one flat daily rate covers the whole trip.
Get eSIMIn Singapore, Saily uses Singtel's 5G network. The integrated VPN keeps your traffic private on hotel and airport Wi-Fi where packet sniffing is common.
Get eSIMNomad support is email-only with 24-48 hour response times. For Singapore trips on Singtel's 5G network at $0.74/GB, the self-service activation process handles most setup scenarios without needing support.
Get eSIMCompare providers: Airalo vs Holafly · Airalo vs Saily · Airalo vs Nomad · Holafly vs Saily · Holafly vs Nomad · Saily vs Nomad
The full picture
AT&T, Verizon, and T-Mobile rates for Singapore
Every major carrier's published Singapore rate, side by side, with the eSIM winner highlighted.
| Carrier | Plan type | Daily | 7-day | Speed | Data limit |
|---|---|---|---|---|---|
| AT&T | International Day Pass | $10.00source | $70.00 | LTE | Plan data |
| Verizon | TravelPass | $10.00source | $70.00 | LTE | Plan data |
| T-Mobile | Magenta (high-speed add-on) | Free*source | $0–105 | 256kbps* | Throttled |
| eSIM · Airalo | 1 GB · 7 days | — | $0.74 | LTE / 5G | 1 GB |
*T-Mobile includes data at 256kbps free; high-speed access is a $5–15/day add-on, shown here as a 7-day range.
Compare all carrier roaming plans to see how AT&T, Verizon, T-Mobile, Vodafone, and EE stack up against eSIM providers.
Pay-per-use cost audit
Singapore data charges on AT&T pay-per-use: real dollar amounts
One day in Singapore without an international plan: typical phone use runs roughly 450 MB. At AT&T's $2.05/MB pay-per-use rate, that day costs $922. Breakdown: 1 hour of navigation ($102), 30 minutes of Zoom ($922), uploading 20 photos ($410), light social media. One day with a Singapore eSIM on StarHub: roughly $0.78 when you spread the plan cost across your trip. AT&T's International Day Pass is $12/day and avoids pay-per-use entirely — but even that costs more than most eSIM plans cover for the same period. Source: AT&T rate card, June 2026.
Personalize your savings
How much will you save with an eSIM in Singapore?
Adjust your trip length, carrier, and data habits to see your exact savings.
Network coverage
Singapore roaming network partnerships explained
StarHub runs all cellular service in Singapore. Verizon TravelPass routes you through StarHub at $10/day. A travel eSIM routes through StarHub at $0.74/GB. The service is identical. Only the bill changes. Singapore has 5G through StarHub. There is no 5G-premium tier in carrier roaming or eSIM plans. AT&T's $10/day covers 5G. An eSIM at $0.74/GB covers 5G. You do not pay more for faster service under either model. Singapore has widespread 5G coverage. Nationwide 5G standalone coverage achieved in 2025; all carriers offer 5G Average download speeds reach 355 Mbps on StarHub's network — identical whether you connect through a carrier roaming pass or a travel eSIM. All three major networks deliver near-identical performance in Singapore due to the small island geography.
5G maintained 300+ Mbps consistently across the entire island including Sentosa and East Coast Park.
Pricing breakdown
Price breakdown: roaming vs eSIM in Singapore
Carrier roaming costs for 14 days in Singapore, ranked: T-Mobile high-speed add-on $210, Verizon TravelPass $140, AT&T International Day Pass $140, eSIM 10GB on Singtel $7.40. The eSIM option costs 95% less than AT&T.
The eSIM daily rate works out to $0.53 when spread across 14 days. AT&T charges $10/day, which is 18.9x that figure. T-Mobile's high-speed pass is $15/day. All three connect to the same Singtel towers in Singapore. Singapore has expensive local SIMs compared to Southeast Asian neighbors — but excellent value compared to Western roaming rates.
Per-GB rates for Singapore eSIM plans: 1GB at $5.49 ($5.49/GB), 3GB at $5.99 ($2/GB), 5GB at $8.99 ($1.80/GB), 10GB at $13.99 ($1.40/GB), 20GB at $20.49 ($1.02/GB). Larger plans cost less per gigabyte, so buying up one tier saves money if you are close to the limit. Unlimited daily plans remove the per-GB calculation entirely at $3.49/day. Singapore eSIM prices premium vs Thailand or Vietnam but 70% cheaper than carrier roaming from US/UK/AU. Travelers in Singapore average 2.0GB of mobile data per day, so a 14-day trip needs roughly 28GB.
Trip cost breakdown
Carrier roaming vs eSIM cost in Singapore by trip length
AT&T bills $10/day for roaming in Singapore — that is $0.42/hour around the clock, whether your phone is in your pocket or active. A 2GB eSIM on Singtel costs $5.99 for 3 days — $0.08/hour at continuous use. Difference for a 3-day trip: $24.01.
Over 14 days, AT&T's per-hour rate stays at $0.42. A 20GB eSIM on Singtel for 15GB averages $0.06/hour over the same 14 days. AT&T total: $140. eSIM total: $20.49. Difference: $119.51.
A 30-day stay at $0.42/hour on AT&T reaches $300. A 50GB eSIM on Singtel covering 50GB for video calls and streaming costs $42.69 — $0.06/hour. Total difference over 30 days: $257.31 (86%). Rates checked June 2026.
Airport options
Singapore airport data: what it costs and what to skip
The posted price at Changi (SIN)'s Singtel and StarHub and M1 counter is $12-30 for 100GB / 7-28 days. That figure may not include applicable taxes or activation fees added at the counter. Passport or ID is required for SIM registration. A 1GB eSIM at $5.49 is an all-in price paid online — no surprises at checkout. Off-airport shops in Singapore sell SIMs for $10-20 for 30-100GB / 14-28 days, the lower-cost option if you have extra time.
Local alternative
Local SIM vs eSIM in Singapore
A local SIM in Singapore costs $10-20 for 30-100GB / 14-28 days at Singtel and StarHub and M1. A travel eSIM starts at $5.49 for comparison. The trade-off: you wait 5-10 min; Changi has multiple options across terminals at the airport counter, need a passport for registration, and lose your home number while the local SIM is active.
Data planning
GB requirements for 4 days in Singapore
Most Singapore travelers burn through 2.0GB daily: maps, ride-hailing, and restaurant searches add up quickly. Budget 8GB for 4 days.
The 10GB plan covers your 4-day trip for $13.99. AT&T's roaming cost for the same 4 days is $40. The difference is $26.01, enough for two dinners in Singapore. For heavy data users, unlimited daily plans start at $3.49/day — still cheaper than any carrier roaming pass.
Connectivity
Trusting public WiFi in Singapore: risks and alternatives
WiFi in Singapore: Wireless@SG provides free public WiFi island-wide; excellent coverage in MRT, malls, and public spaces Coverage is strong in urban areas. Rural spots are less consistent. An eSIM keeps you connected when WiFi drops — directions, translations, and payment apps all need steady data.
Plan your data
Estimating data for a trip to Singapore
AT&T International Day Pass charges $10/day in Singapore. A 4-day trip adds $40 to your bill before you download a single map. A travel eSIM on Singtel covers the same 4 days for $13.99 — saving $26.01 (65%).
Singapore has one mobile operator: StarHub. US carriers pay StarHub for roaming access and pass that cost to you at $10/day. An eSIM connects to StarHub directly at $0.74/GB — no carrier markup.
Airport SIM counters at Changi (SIN) charge $12-30 for 100GB / 7-28 days after a 5-10 min; Changi has multiple options across terminals wait — still more than a 10GB eSIM at $13.99. Local prepaid SIMs in Singapore run $10-20 for 30-100GB / 14-28 days, requiring an in-person stop and sometimes a passport copy. An eSIM at $13.99 skips that entirely. Prices stable year-round; frequent promotions at carrier stores
Quick reference
Singapore Travel Essentials
999/995
999, 995 are the emergency numbers in Singapore. Different numbers may route to different services — save all of them before your trip. Emergency calls work from any mobile device, including travel eSIMs.
Type G
Singapore uses Type G outlets (UK-style three large rectangular prongs). US plugs do not fit — bring a Type G travel adapter. Most US phone and laptop chargers are dual-voltage (100-240V) and work fine with just the adapter.
SGT (UTC+8)
SGD (S$)
Tap-to-pay (Apple Pay, Google Pay) is accepted at most stores and restaurants in Singapore. Visa and Mastercard work at virtually all merchants. Carry a small amount of local SGD for markets, taxis, and small vendors that do not have card readers.
Good to know
Average data consumption in Singapore runs around 2.0GB/day for typical tourist use. Factor this into your plan size — a 1GB plan runs out in under a day for video-heavy users. A 5GB plan covers most week-long trips at moderate use.
Quick tip
Singapore law requires identity verification for any physical SIM purchase. Passport required for prepaid SIM purchase; instant activation An eSIM purchased before departure involves no in-country registration process.
Step by step
Switch to an eSIM for Singapore in 6 steps
- On Samsung Galaxy S21 or newer: go to Settings > Connections > SIM manager to verify eSIM support — Pixel 3a and later also qualifies — Singtel covers 5G in Singapore
- First-time buyer: Airalo offers Singapore data at $5.49 for 1GB — create an account, add a payment method, and your QR code arrives in under 60 seconds. Compare eSIM providers to see your options.
- First-time eSIM install: your phone walks you through the QR scan step by step — the profile downloads in 10-30 seconds over a WiFi connection — do this before your flight to Changi (SIN) so it activates the moment you land
- Returning traveler shortcut: set your home carrier SIM to Data Off in the dual-SIM panel rather than navigating through roaming menus. The full data roaming guide covers all shortcuts.
- Enable the eSIM data line at Changi (SIN) — it connects to Singtel automatically
- Leave your home SIM enabled for incoming calls: WiFi Calling routes them over the eSIM data connection at no extra cost
Data tips
Data-saving tips for Singapore
Photo backup is a silent data drain. Google Photos and iCloud auto-upload on cellular will consume 20-100 MB per photo session depending on image quality. Turn off auto-backup on cellular before landing in Singapore. Back up manually over hotel WiFi instead. A 10-photo session in RAW format can exceed 500 MB.
Regional context
Asia travel: Singapore mobile data guide
A few things to know before turning off carrier roaming in Singapore:
Singapore SIM registration: Passport required for prepaid SIM purchase; instant activation. A travel eSIM purchased abroad bypasses local SIM registration requirements at the point of sale.
Singapore's 5G standalone network covers 95%+ of the island — among the best 5G experiences globally
Changi Airport has free unlimited WiFi and free phone charging stations throughout all terminals
MRT transit card (EZ-Link) available on Apple Pay and Google Pay alongside eSIM
Singapore has strict content filtering — some sites blocked but VPN use is legal
TPG became Singapore's fourth carrier in 2020, increasing competition and lowering prices
Wireless@SG provides free public WiFi island-wide; excellent coverage in MRT, malls, and public spaces Roaming passes charge $10/day to fill WiFi gaps. An eSIM covers the same connectivity at $0.74/GB.
Singapore's compact size means a single eSIM provides excellent coverage everywhere — no dead zones to worry about.
Year-round destination; peak during Christmas/New Year and European summer holidays
Forgot your eSIM?
You forgot to buy an eSIM for Singapore — here is what to do
Post-arrival eSIM installation in Singapore works from any WiFi connection. No cellular data is required to purchase or install. Changi (SIN) provides free WiFi to arriving passengers in the terminal. Open your preferred provider — Airalo, Holafly, Saily, or Nomad — and complete the purchase. All four deliver the eSIM QR code by email and in-app simultaneously. If you miss the airport window, check into your hotel and use the lobby WiFi. Front desks in Singapore provide the WiFi password at check-in. A 1GB plan at $5.49 gives you 1GB of Singtel data from the moment you scan the QR code.
Singapore FAQ
Singapore eSIM & roaming questions
How much does carrier roaming cost in Singapore?
AT&T charges $10/day on International Day Pass for Singapore. Verizon charges $10/day on TravelPass. T-Mobile includes Singapore for free at 256 Kbps — barely fast enough for text messages, not usable for maps or apps. Without any plan, AT&T's pay-per-use rate is $2.05/MB, meaning a single Google Maps session costs over $10. A travel eSIM on Singtel starts at $5.49 for 1GB — the same 5G network at a fraction of the daily roaming cost.
Is T-Mobile's free international data fast enough in Singapore?
No. 256 Kbps sounds like it covers light use, but even a single email with an attachment or a 30-second map route takes over a minute to load at that speed. T-Mobile's free tier in Singapore is functional only for plain text messages. The paid upgrade runs $15/day — identical to AT&T's roaming fee. A travel eSIM on Singtel at $0.74/GB costs less per GB than any day-pass option and has no speed restriction.
How is my roaming bill calculated in Singapore?
A traveler lands in Singapore, checks one notification, and AT&T bills $10 for the entire calendar day. That is how per-day billing works — any cellular connection, even a background sync at midnight, triggers the full daily charge. Without a day pass, AT&T charges $2.05/MB. A 15-second Instagram scroll could cost $30. An eSIM at 1GB for $5.49 is a fixed cost: no per-day triggers, no per-MB metering, no bill surprises.
How much data do TikTok and Instagram use in Singapore?
TikTok at standard quality uses 700 MB/hour of viewing. Instagram Stories and Reels use 500-800 MB/hour depending on video resolution. At $0.74/GB on Singtel in Singapore, one hour of TikTok costs roughly $0.52 and one hour of Instagram Reels costs roughly $0.48. AT&T International Day Pass at $10/day covers all social media but applies the full daily fee regardless of how little you use. For travelers who browse social apps 30-60 minutes per day, the eSIM still costs less than one AT&T day fee. Rates checked June 2026.
Can I keep my phone number while using an eSIM in Singapore?
Yes. Your home SIM keeps your number active for calls and texts — enable WiFi Calling so those work over hotel WiFi. The eSIM handles all mobile data on Singtel's 5G network at $0.74/GB. Both SIMs run simultaneously. iMessage and WhatsApp stay tied to your home number because they identify you by phone number, not by which SIM provides the data connection.
Which US carrier has the best roaming deal for Singapore?
None of the three US carriers offer a genuinely good deal in Singapore. AT&T: $10/day. Verizon: $10/day. T-Mobile: free at 256 Kbps (unusable for navigation), $15/day for full speed. A travel eSIM on Singtel starts at $0.74/GB — a 7-day trip at average usage costs $7.77 versus $70 for AT&T. No carrier matches the eSIM on per-GB cost.
How much does a week of data in Singapore cost with each US carrier?
AT&T International Day Pass: $70 for 7 days. Verizon TravelPass: $70. T-Mobile high-speed add-on: $105. T-Mobile free tier: $0 but throttled to 256 Kbps (not usable). A travel eSIM on Singtel: roughly $7.77 for 7 days at 1.5 GB/day average usage. The eSIM is 80-90% cheaper than any paid carrier option.
Do local apps in Singapore require a local SIM or does an eSIM work?
Most local apps in Singapore — ride-hailing, food delivery, transit — do not require a local SIM number to function. They require only a data connection, which a travel eSIM provides at $0.74/GB on Singtel's 5G network. Some banking and two-factor authentication apps require a local phone number for SMS verification. For those cases, keep your home SIM active alongside the eSIM — your home number handles SMS while the eSIM handles data.
Is one eSIM enough for a multi-country Asia trip that includes Singapore?
Multi-country Asia eSIM plans exist and cover many combinations — Japan, South Korea, Thailand, Singapore, and others in a single data bucket. AT&T and Verizon charge $10/day in each country separately, so a 3-country trip at 3 days each costs $90. A regional Asia eSIM for the same 9 days runs $15-$40 total. Check plan coverage maps — Singapore may be included in a regional plan, or you may need a Singapore-specific plan plus a regional one.
How much does carrier roaming cost for a week in Singapore?
AT&T: $70/week (International Day Pass at $10/day). Verizon: $70/week (TravelPass). T-Mobile: free at 256 Kbps or $105/week for usable speed. The cheapest eSIM for Singapore starts at $0.74/GB on Singtel's 5G network — better per-GB value than all three carriers.
Fact check
eSIM and roaming: facts vs. assumptions for Singapore
EU roaming is free for Americans
EU roaming-within-the-EU rules apply only to SIM cards issued by EU-based carriers. AT&T and Verizon are US carriers — they charge full international day pass rates in every EU country. AT&T's International Day Pass runs $12/day in EU destinations. Verizon TravelPass is $10/day. A travel eSIM on Singtel covers Singapore for $5.49 total. Rates checked June 2026.
You need to unlock your phone to use an eSIM
eSIM installation does not require an unlocked phone in most cases. iPhones sold in the US since iPhone 14 are sold unlocked by law. iPhones XS through 13 require unlocking to add a foreign carrier eSIM, but AT&T, Verizon, and T-Mobile all offer free unlocking after your contract ends. Samsung Galaxy S20 and newer models support eSIM on both locked and unlocked variants. Check your carrier's unlock policy before your trip to Singapore.
Roaming charges only apply to data
US carrier international plans charge separately for data, calls, and texts. AT&T's International Day Pass at $12/day includes data but charges $0.25–$1.50/minute for calls beyond the bundled allocation. Incoming voicemail retrieval can trigger per-minute roaming charges even when you make no outgoing calls. A data-only eSIM in Singapore at $5.49 covers data and uses WhatsApp or FaceTime for voice at no additional carrier cost. Rates checked June 2026.
Our recommendation
Singapore trip data conclusion
For heavy data users in Singapore: Holafly's unlimited plan runs on Singtel in Singapore at $3.49/day with no data cap. For trips longer than 5 days, unlimited data removes the guesswork of picking the right GB tier. Streaming, video calls, and tethering all work without watching a usage meter. Airalo is the pick if you use less than 2 GB/day — a 1GB plan at $5.49 costs less for light users.
Stop paying $10/day to roam in Singapore
Carrier day passes add up: 7 days x $10/day = $70. One eSIM plan covers the same trip for $0.74.
Get a Singapore eSIM