Brunei · roaming cost calculator
Brunei Roaming Price Audit: $120 on AT&T, $75 on an eSIM
HelloRoam is the top pick for Brunei on this site's rubric, though its 7-day unlimited plan there costs $88.15, at full speed for the first 2 GB a day, above the $84 a week on AT&T's $12-a-day pass, so for one week the day pass costs less, and Holafly ranks second on this site's rubric. HelloRoam refunds an unactivated eSIM for 180 days. Airalo covers 200+ destinations to HelloRoam's 185. HelloRoam's price is from its catalogue of 29 Oct 2026, rivals' from the 30 Oct 2026 price check; AT&T's rate was checked June 2026.
Brunei is priced two ways here, a 20GB travel eSIM at $75 and a US carrier day pass at $12, and both invoices arrive in dollars. HelloRoam takes payment in 31 checkout currencies, so a card in one of them pays in its own money.
Brunei eSIM plans: data allowances and prices
For a short trip to Brunei, HelloRoam's smallest fixed plan is $8.28 for 1 GB over 7 days, on a local network. One day of AT&T roaming costs $12.
Get eSIMHolafly offers unlimited daily data in Brunei on a local 4G LTE network. No per-GB counting — pay per day, use as much as you want.
Get eSIMNomad delivers QR codes within minutes via email and in-app. In Brunei, the plan connects to a local 4G LTE network as soon as the device leaves airplane mode.
Get eSIMIn Brunei, Airalo rides the same local towers your roaming SIM would use, at $2.40/GB instead of $12/day.
Get eSIMSaily is owned by Nord Security, which also runs NordVPN and NordPass. In Brunei, its 4G LTE eSIM at $2.60/GB comes from a vendor whose security infrastructure is independently audited.
Get eSIMCompare providers: Airalo vs Holafly · Airalo vs Saily · Airalo vs Nomad · Airalo vs HelloRoam · Holafly vs Saily · Holafly vs Nomad · Holafly vs HelloRoam · Saily vs Nomad · Saily vs HelloRoam · Nomad vs HelloRoam
The full picture
Brunei international day pass rates by carrier
Every major carrier's published Brunei rate, side by side, with the eSIM winner highlighted.
| Carrier | Plan type | Daily | 7-day | Speed | Data limit |
|---|---|---|---|---|---|
| AT&T | International Day Pass | $12.00source | $84.00 | LTE | Plan data |
| Verizon | TravelPass | $12.00source | $84.00 | LTE | Plan data |
| T-Mobile | International Pass | $10.00*source | $50.00 | LTE | 2GB per 1 Day pass |
| eSIM · HelloRoam | 20GB data plan | — | $75.00 | 4G LTE | 20GB |
*T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. The 1 Day International Pass costs $10; the 7-day figure is the cheapest pass mix, 10-day pass.
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
The cost of forgetting your international plan in Brunei
AT&T pay-per-use data in Brunei costs $2.05/MB when no $12/day international day pass is active. At that rate, five common activities add up quickly.
5-minute FaceTime call (~75 MB): $154. 30-minute Zoom meeting (~450 MB): $922. 1 hour of Google Maps navigation (~50 MB): $102. Uploading 20 vacation photos (~200 MB): $410. 1 hour of YouTube (~500 MB): $1025. Combined, those five activities use roughly 1.3 GB — before background app refresh or iCloud sync adds anything. Rates checked June 2026. Source: AT&T international rate card.
Personalize your savings
Your Brunei saving against $12 a day
Adjust the trip length, the carrier and the daily data below and the calculator reprices both sides. The starting point is the 10-day average stay recorded for Brunei: $120 on an AT&T day pass at $12 a day, against $75 for a 20GB travel eSIM. Both prices buy access to the same local operators.
Network coverage
Which networks operate in Brunei
Local operators own every tower in Brunei, DST among them. Your carrier rents those towers at $12/day for roaming. A travel eSIM rents those same towers at $3.75/GB. The network does not change. The price does. DST operates 4G LTE on standard LTE bands in Brunei. Your phone accesses those bands identically on a carrier roaming pass and a travel eSIM. The speed ceiling is 4G LTE under both billing models.
Network attachment record
The networks behind both prices in Brunei
HelloRoam publishes one local operator for Brunei: DS.
One operator means no fallback network.
Where DS has no signal, an eSIM has nowhere else to attach.
HelloRoam records a 5G label against DS.
Carrier roaming meets the same ceiling, because roaming rents local networks.
Price is what separates the two options in Brunei. This page prices both.
5G and 4G here are capability labels. Neither one is a speed reading.
DS carry the eSIM in Brunei. Across the whole file HelloRoam names 154 operators over 185 destinations, 117 of them with a single operator and 1.48 on average. Roaming buys wholesale access to that same list.
| Operator | Network generation on file |
|---|---|
| DS | 5G |
Source: HelloRoam package feed, read 17 August 2026. The feed publishes an operator list for every destination it sells. No speed test sits behind this table, and we ran none. The full operator map covers 185 destinations.
Pricing breakdown
Per-day data costs in Brunei: roaming and eSIM
A 14-day trip to Brunei costs this in carrier roaming: AT&T $120, Verizon $168, T-Mobile high-speed $75. Subtract the eSIM cost ($37.50 for a 10GB plan on a local network) and the gap is $82.50 vs AT&T.
Translated to a daily rate, the eSIM works out to $2.68/day over 14 days. AT&T and Verizon both charge $12 a day; AT&T's rate is 4.5x more per day of data. T-Mobile's International Pass is the cheapest of the three at $10/day for full-speed data in Brunei.
Brunei eSIM plans scale up from the smallest tier: 1GB at $8.28 ($8.28/GB), 3GB at $20.52 ($6.84/GB), 10GB at $57.90 ($5.79/GB), 20GB at $75 ($3.75/GB). Pick the tier that matches your expected data use. Heavy users can take the unlimited option at $11.45/day, which totals $160.27 for 14 days, above AT&T's $120 at $12 a day.
The unlimited ladder for Brunei reads 1 day at $14.31, 3 days at $40.78, 7 days at $88.15, 14 days at $160.27, 30 days at $291.92. Unlimited here means 2GB a day at full speed before a fair-use policy applies. At 30 days the rate is $9.73 a day. Catalogue prices read 29 Oct 2026.
Trip cost breakdown
AT&T vs eSIM costs for Brunei trips of every length
AT&T bills $12/day for roaming in Brunei — that is $0.50/hour around the clock, whether your phone is in your pocket or active. A 2GB eSIM on a local network costs $20.52 for 3 days — $0.28/hour at continuous use. Difference for a 3-day trip: $15.48.
Over 14 days, AT&T's per-hour rate stays at $0.36. A 20GB eSIM on a local network for 15GB averages $0.22/hour over the same 14 days. AT&T total: $120. eSIM total: $75. Difference: $45.
A 30-day stay at $0.17/hour on AT&T reaches $120. A 50GB eSIM on a local network covering 50GB for video calls and streaming costs $187.50 — $0.26/hour. Total difference over 30 days: $-67.50 (-56%). Rates checked June 2026.
Airport options
Getting connected at Brunei airports
Airport SIM shops in Brunei primarily serve the local language market. Staff English proficiency varies and getting help with plan options takes longer when there is a language gap. An eSIM purchased online comes with English-language support and app-based troubleshooting — no language barrier between you and your 1GB data plan at $8.28.
Data planning
7-day Brunei data budget breakdown
Most US travelers use more data at home than abroad because they rely on WiFi less when navigating an unfamiliar city. In Brunei, 1.5 GB per day is a fair budget for 7 days, totaling 11GB. A 20GB plan at $75 covers that comfortably.
At $75 for 7 days, the 20GB plan works out to $10.71/day. AT&T charges $12/day for the same network access on a local network. Both connect to the same towers. The billing model is different. For heavy data users, a 1-day unlimited plan costs $14.31, not under AT&T's $12/day pass.
Connectivity
Where to find reliable WiFi in Brunei
Cafe WiFi in Brunei is open and unencrypted — fine for general browsing, risky for banking or work logins. Coverage is sparse outside cities. A travel eSIM on a local network gives you a private cellular connection for sensitive apps at $3.75/GB.
Plan your data
How much data a Brunei trip requires
Business travelers expensing Brunei trips put $120 in roaming charges on the AT&T line item for a 10-day trip. A 20GB eSIM on a local network delivers the same 4G LTE connectivity for $75. Difference: $45 per trip.
Brunei has one mobile operator: DST. US carriers pay DST for roaming access and pass that cost to you at $12/day. An eSIM connects to DST directly at $3.75/GB — no carrier markup.
Local prices in Brunei are in BND (B$), but eSIM plans are priced in USD, eliminating exchange rate uncertainty on your data costs.
Quick reference
Brunei Travel Essentials
993/995/991
993, 995, 991 are the emergency numbers in Brunei. 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
Brunei 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.
BNT (UTC+8)
BND (B$)
Cash in BND is preferred across most of Brunei outside major hotels and tourist centers. Card terminals are not common in local markets or small restaurants. Withdraw enough cash at a reliable ATM before leaving the city — rural areas may not have ATM access.
Good to know
In Brunei, dial 993/995/991 for emergency services. Calling 112 may not connect on all networks. This number works on any active SIM or eSIM, including plans with exhausted data balances.
Good to know
VPN access in Brunei is restricted. Saily includes built-in VPN from the NordVPN team.
Step by step
How to add a Brunei eSIM to your phone
- First time using an eSIM: call your carrier or check Settings > General > About > Carrier Lock on iPhone to verify your device is unlocked — Brunei eSIMs require an unlocked phone
- Returning HelloRoam user: log in, select Brunei from recent destinations, and repurchase the 1GB plan at $8.28 — saved payment details cut checkout to under 30 seconds. Compare providers to make sure you're still getting the best rate.
- Returning user: if HelloRoam supports direct eSIM activation (no QR required), tap Activate in the app and your Brunei profile installs automatically before you leave home so it is ready to activate on arrival
- Disable data roaming on your carrier SIM in Settings > Cellular > Cellular Data Options. See the step-by-step guide to turning off data roaming for screenshots.
- Switch your active data line to the eSIM when you land in Brunei and you will be on LTE within seconds
- Use WiFi Calling on your home SIM line so you can receive calls and texts without paying roaming voice rates
Data tips
Which apps drain data fastest in Brunei
Ride-hailing apps in Brunei use about 2-5 MB per trip — including the map, driver tracking, and payment confirmation. Live navigation with Google Maps or Apple Maps runs roughly 50 MB/hour. Download offline maps first and switch to offline navigation to cut that number to near zero.
Regional context
Brunei in regional context: Asia data costs
A few things to know before turning off carrier roaming in Brunei:
VPN usage is restricted in Brunei. This applies equally to carrier roaming and eSIM connections — switching from roaming to eSIM does not change your VPN access in Brunei.
Internet content filtered
DST is dominant carrier
Nearby
Related destinations
6 destinations near Brunei are priced on the same rate card. AT&T bills $12 a day in every one of them, and the figure beside each flag is that destination's own per-gigabyte floor. The cheapest of the group is Bangladesh at $1.25 a gigabyte.
Forgot your eSIM?
Post-arrival eSIM options in Brunei
If you reach Brunei without an eSIM, your first 30 minutes at the airport determine your data costs. Most airports in Brunei have free WiFi near arrivals. Connect as soon as you clear customs. From there, HelloRoam, Holafly, Nomad, Airalo, and Saily all support post-arrival eSIM purchases. The process: download the app over WiFi, choose a Brunei plan, scan the QR code, and activate. A 1GB plan on a local network costs $8.28, against $24 for two days on AT&T's International Day Pass. If airport WiFi drops mid-install, hotel lobby WiFi provides a stable fallback for finishing the process.
Savings math
How much you save in Brunei
Solo traveler
Verizon TravelPass for 10 days in Brunei: $120. That is $12 for each 24-hour session, and a session starts on any network contact, including a background email sync. A 20GB eSIM on a local network costs $75 and does not bill per day. Savings: $45 (38%). Same 4G LTE network.
Family trip
A family of four on AT&T visiting Brunei for 10 days: 4 lines x $12/day x 10 days = $300. Four individual 20GB eSIMs on a local network: $300. Family savings: $0. Alternative: two eSIMs with tethering for two devices each costs $150 total. That cuts the family data bill to 50% of AT&T roaming.
AT&T roaming rate analysis
AT&T International Day Pass charges $12/day in Brunei. Each charge covers 24 hours from the first time your phone uses a local network, including background syncs from email, iCloud, and app updates, and AT&T bills at most 10 daily fees per line each bill cycle. Cost by duration: 7 days = $84. 10 days (average Brunei trip) = $120. 30 days = $120. Without the $12/day Day Pass, AT&T's pay-per-use rate is $2.05/MB, which reaches $2,099/GB. AT&T Prepaid customers cannot add Day Pass and pay this rate automatically. A 20GB eSIM on a local network costs $75 for 10 days. Savings: $45 (38%).
All-carrier summary
AT&T: AT&T International Day Pass costs 60% more than an eSIM for Brunei.
Verizon: Verizon TravelPass costs 60% more than an eSIM for Brunei.
T-Mobile: T-Mobile's International Passes cost less than this eSIM plan for Brunei.
Against AT&T: $45 saved (38%). Against Verizon: $45 saved. Against T-Mobile's International Pass at $10/day: $0 saved. Against T-Mobile free tier: $0 carrier cost, but the throttle renders maps, ride-hailing, and video calls unusable. A 20GB eSIM at $75 delivers full 4G LTE on a local network for less than any paid roaming option.
Quick answers
Common questions about Brunei data costs
Is eSIM cheaper than roaming in Brunei?
The eSIM price for Brunei starts at $75 for 20GB on a local network. AT&T roaming for the same 10-day trip runs $120 at $12/day. That is a $45 gap on the same cell towers. For a family of four, the combined savings reach $180. Rates checked June 2026.
How much does roaming cost in Brunei?
Roaming in Brunei costs $12/day on AT&T ($120 for 10 days), $12/day on Verizon ($120), and $50 on T-Mobile's International Passes (10-day pass). A travel eSIM on a local network costs $75 for 20GB. Rates checked June 2026.
Does T-Mobile work in Brunei?
Yes, within the plan's allowance. T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. At 256Kbps Google Maps and ride-hailing apps stall. T-Mobile's 1 Day International Pass costs $10 for 2GB, and a week of passes $50 (10-day pass). A travel eSIM on a local 4G LTE network costs $75 for 20GB over 10 days. Rates checked June 2026.
AT&T fine print for Brunei
$12 covers 24 hours from the first time your phone uses a foreign network, and a single background push notification at 2 AM can start it. AT&T bills at most 10 daily fees per line each bill cycle (terms read 31 Oct 2026).
iCloud Photos, email push, app updates all trigger the daily charge. A phone left in a bag with data roaming on starts a new $12 fee each time a sync lands after the last 24 hours ran out.
Brunei FAQ
Brunei eSIM & roaming questions
Brunei carrier roaming costs $12 a day on AT&T and on Verizon
For a 14-day trip: AT&T roaming costs $120, Verizon $168, T-Mobile's passes $75 (30-day pass). Travel eSIM plans price data as a bucket rather than a day, so 14 days costs the same as 5 at $8.28 for 1GB. Cross a border and the split between the five providers matters: Airalo reaches 200+ destinations, Nomad 200, HelloRoam 185 and Holafly 200+. This site states no Saily count. A multi-country route is the one case where paying more per gigabyte for wider coverage is the cheaper decision. Rates checked June 2026.
T-Mobile's included data in Brunei runs at high speed until the allowance ends
Only until the allowance runs out. T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. At 256Kbps text messaging works and maps slow down. T-Mobile's 1 Day International Pass costs $10 for 2GB, and its 10-day pass $50 for 15GB. Five eSIM providers deliver full 4G LTE on a local network instead, from $3.75/GB. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
Brunei roaming bills by the day, not by the gigabyte
AT&T bills $12 per 24 hours from the first time your phone touches a Brunei tower, at most 10 fees per line each bill cycle. Verizon matches that rate. Without a pass, each megabyte costs $2.05, so one accidental gigabyte reaches $2,099. T-Mobile's Experience plans include 5GB or 15GB of high-speed data abroad, then up to 256Kbps. An eSIM bucket at 1GB for $8.28 sidesteps all three: pay once, use it until the data runs out, and face no overage. The catch is the reverse of the carriers' catch. Run the bucket dry and you buy another one, so size the plan against your real usage. Rates checked June 2026.
Hotspot caps differ by provider on Brunei plans
Holafly is the one to check. Its unlimited plans cap mobile hotspot at 1 GB a day, which is the trade for uncapped data on the phone itself. Fixed-data plans from Nomad, HelloRoam, Saily, and Airalo let you spend the bucket however you like, tethering included, because a gigabyte shared with a laptop is the same gigabyte. Read the plan page anyway, since a small number of budget plans restrict hotspot use. AT&T allows hotspot under International Day Pass at $12/day per line, or $84 across a week in Brunei. If the laptop is the point of the trip, buy fixed data on DST at $3.75/GB rather than an unlimited day plan. Rates checked June 2026.
A Brunei travel eSIM is refundable while it stays unactivated
Only if you never activated it, and the window varies more than any other term in this market. HelloRoam and Holafly refund unactivated plans for 180 days, the longest here and a genuine tie. Saily runs 30 days and Nomad runs 30. Airalo runs 14 days, the shortest of the five. Once the QR code is scanned and the profile lands on your phone, none of them refunds it, whether or not you traveled. AT&T works differently: International Day Pass at $12/day only bills on days the pass activates in Brunei, so a cancelled trip costs nothing at all. Read the refund clause before you buy, not after. Rates checked June 2026.
The three US carriers price Brunei roaming on different terms
None of the three US carriers offer a genuinely good deal in Brunei. AT&T: $12/day. Verizon: $12/day. T-Mobile: 5GB or 15GB of high-speed data included on its Experience plans, then up to 256Kbps, or $10 for a 1 Day pass. A travel eSIM on DST starts at $3.75/GB — a 7-day trip at average usage costs $39.38 versus $84 for AT&T. No carrier matches the eSIM on per-GB cost.
VPN access in Brunei works the same on an eSIM as on roaming
VPN access in Brunei is restricted, and the product you buy does not change that. Check local law before you connect. Carrier roaming and travel eSIMs both terminate on a local network, so both meet the same local filtering. Routing does differ between providers and results differ with it, but none of the five sells guaranteed access and we will not claim one does. Saily is the only provider here that bundles a VPN, which saves a separate subscription and carries no promise it works where access is restricted. Install and sign in to whatever VPN you plan to use before you fly, because the download itself may be blocked once you land.
Local Brunei apps run on a travel eSIM without a local SIM
Most local apps in Brunei — 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 $3.75/GB on a local 4G LTE 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.
One eSIM can cover a multi-country Asia route including Brunei
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 $12/day in each country separately, so a 3-country trip at 3 days each costs $108. A regional Asia eSIM for the same 9 days runs $15-$40 total. Check plan coverage maps — Brunei may be included in a regional plan, or you may need a Brunei-specific plan plus a regional one.
A week of Brunei carrier roaming costs $84
AT&T: $84/week (International Day Pass at $12/day). Verizon: $84/week (TravelPass). T-Mobile: 5GB or 15GB of high-speed data included on its Experience plans, then up to 256Kbps, or $50 for a week of passes (10-day pass). The cheapest eSIM for Brunei starts at $3.75/GB on a local 4G LTE network — better per-GB value than all three carriers.
Fact check
What is wrong about how people think about Brunei roaming
Carrier roaming is more reliable than an eSIM
Reliability is determined by the local carrier's network, not the billing layer above it. AT&T roaming in Brunei routes through a local network. A travel eSIM also routes through a local network. Both connections depend on local network coverage in any given area. AT&T charges $12/day for a connection with zero reliability advantage over the $8.28 eSIM.
Pay-per-use international data rates are reasonable
AT&T's pay-per-use international data rate is $2.05/MB without an active plan. At that rate, 1 GB costs $2,099. A single Google Maps navigation session in Brunei loads 50–100 MB — that is $102–$205 at pay-per-use. A 1GB eSIM on a local network costs $8.28 for the same data. Always activate a day pass or eSIM before your flight. Rates checked June 2026.
T-Mobile includes free international data
T-Mobile's Experience plans include 5GB or 15GB of high-speed data abroad, then up to 256Kbps, too slow to load a map tile in Brunei past the allowance. Its 1 Day International Pass costs $10. Exception: T-Mobile does not charge for calls, texts or data in Mexico and Canada; depending on the plan, up to 30GB is at high speed, then up to 256Kbps. Brunei is not on that list. Rates checked June 2026.
Our recommendation
Which eSIM to get for Brunei
For a standard trip to Brunei, HelloRoam covers the bases. HelloRoam covers Brunei on a local network and scores 9.9/10 on our rubric, the highest of the 5 providers we price. A 1GB plan costs $8.28. Unactivated plans are refundable for 180 days, and its support replies in your own language. Saily is the alternative if privacy matters most: VPN usage is restricted in Brunei, and Saily includes NordVPN-grade encryption on every plan.
Learn more
Travel guides, Brunei
4 guides carry the parts of a Brunei trip this page does not price: installing the profile before departure, switching data roaming off on the home SIM, and what happens to the allowance once a fair-use policy applies. Each one reads the same rate card as this page, where AT&T bills $12 a day.
Get Brunei data for $75 instead of $84 in carrier roaming
Brunei eSIMs reach the same local networks carrier roaming reaches. The cost is $75 vs $84 for a week.
Get a Brunei eSIM