Mongolia · roaming cost calculator
Roaming Price Audit: What 10 Days of Data Cost in Mongolia
HelloRoam is the top pick for Mongolia: its 7-day unlimited plan costs $36.90, at full speed for the first 1 GB a day, against $84 for a week on AT&T's $12-a-day pass, a $47 gap, and Holafly ranks second on this site's rubric. HelloRoam takes checkout through Stripe, with Apple Pay and Google Pay, in 31+ currencies. 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.
Currency is the column nobody prices. HelloRoam settles a Mongolia order in 31 currencies, and a dollar charge on a euro or sterling card picks up 2 to 4 percent at the bank.
Travel eSIM options, rates and coverage, Mongolia
HelloRoam sells both fixed data and unlimited day plans on a local 4G LTE network. In Mongolia: fixed data from $5.76 for 1 GB over 7 days, and unlimited at $36.90 for 7 days of unlimited data, at full speed for the first 1 GB each day.
Get eSIMMongolia on Holafly means 4G LTE data with no per-GB cap, at a median $3.93/day. Fair-use throttling applies after the daily threshold: speeds drop but the plan stays active.
Get eSIMNomad support is email-only, with no live chat and no phone line. For Mongolia trips at $2.30/GB, self-service activation handles most setup without a support ticket.
Get eSIMAiralo's app shows real-time data usage, so you can see how much of a Mongolia plan is left. Plans start at $2.40/GB on a local 4G LTE network.
Get eSIMIn Mongolia, Saily uses a local 4G LTE network. The integrated VPN keeps your traffic private on hotel and airport Wi-Fi where packet sniffing is common.
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
What carriers charge to roam in Mongolia
Every major carrier's published Mongolia 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 | — | $81.00 | 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
Mongolia data bill scenarios: AT&T without a day pass
AT&T's international pay-per-use rate is $2.05/MB in Mongolia. Mixed phone use — maps, messaging, and social media — runs about 60 MB/hour. One hour of that: $123. Four hours of normal use: $492. Eight hours, a full day out: $984. A 30-minute Zoom meeting alone adds $922. A 5-minute video call with family costs $154. These are AT&T's published pay-per-use figures. Source: AT&T international rate card, June 2026.
Personalize your savings
Your Mongolia 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 Mongolia: $120 on an AT&T day pass at $12 a day, against $81 for a 20GB travel eSIM. Both prices buy access to the same local operators.
Network coverage
Mongolia signal strength and network density
Mobicom is the only mobile network in Mongolia. Every roaming and eSIM connection goes through the same towers. AT&T charges $12/day for that access. An eSIM charges $4.05/GB. Pull up AT&T's roaming rate card for Mongolia and a travel eSIM plan side by side. The network is Mobicom in both cases. The price is not. 4G LTE download and upload speeds are available on a local network in Mongolia. A carrier roaming pass delivers those speeds. A travel eSIM delivers the same speeds. Paying $12/day does not increase your download speed over the $4.05/GB eSIM rate.
Network attachment record
The networks behind both prices in Mongolia
HelloRoam publishes one local operator for Mongolia: Mobicom.
One operator means no fallback network.
Where Mobicom has no signal, an eSIM has nowhere else to attach.
HelloRoam records no 5G operator for Mongolia.
Carrier roaming meets the same ceiling, because roaming rents local networks.
Price is what separates the two options in Mongolia. This page prices both.
5G and 4G here are capability labels. Neither one is a speed reading.
The operator file behind this page covers 185 destinations and 154 operators, 98 of those destinations carrying a 5G label. Mongolia is one of 117 single-operator destinations in that file: Mobicom. Carrier roaming reaches the same radios, so the gap between the two prices is a billing gap.
| Operator | Network generation on file |
|---|---|
| Mobicom | 4G |
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
Mongolia trip data costs by carrier and eSIM
Here is the 14-day cost breakdown for Mongolia. AT&T International Day Pass: $12 per 24 hours, $120. Verizon TravelPass: $168. T-Mobile International Passes: $75 (30-day pass). eSIM 10GB plan on a local network: $40.50. That is $79.50 less than AT&T, a 66% reduction for the same 4G LTE connectivity.
Per-day data costs in Mongolia: AT&T $12, Verizon $12, T-Mobile $10, eSIM $2.89. The eSIM figure is derived from a $40.50 10GB plan spread across 14 days. Carrier rates are fixed regardless of how much data you use each day.
eSIM plan tiers for Mongolia: 1GB at $5.76 ($5.76/GB), 3GB at $18.16 ($6.05/GB), 5GB at $27.45 ($5.49/GB), 10GB at $43.05 ($4.31/GB), 20GB at $81 ($4.05/GB). Unlimited daily data costs $4.79/day on the 14-day plan ($67.09 in all). Even the unlimited eSIM tier costs less than AT&T's $120 roaming bill.
Unlimited data for Mongolia starts at $5.99 for 1 day and runs to $122.20 for 30, priced 1 day at $5.99, 3 days at $17.07, 7 days at $36.90, 14 days at $67.09, 30 days at $122.20. Unlimited here means 1GB a day at full speed before a fair-use policy applies. Catalogue prices read 29 Oct 2026.
Trip cost breakdown
Mongolia trip cost breakdown: 3 days, 14 days, 30 days
Three common trip types to Mongolia and what each costs on AT&T vs a Mobicom eSIM:
Weekend city break (3 days, 2GB): AT&T $36 · eSIM $18.16 · saves $17.84 (50%) 2-week family vacation (14 days, 15GB): AT&T $120 · eSIM $81 · saves $39 (33%) 1-month digital nomad (30 days, 50GB): AT&T $120 · eSIM $202.50 · saves $-82.50 (-69%)
AT&T charges $12/day whether you use 50 MB or 5 GB that day. eSIM plans charge for a fixed data block purchased once. At no point in any of the three scenarios does carrier roaming cost less. Rates checked June 2026.
Airport options
Getting connected at Mongolia airports
Airport kiosks in Mongolia quote SIM card prices before taxes and activation fees. After the counter adds those costs, your final bill is higher than the posted rate. A 1GB eSIM at $5.76 is an all-in price — what you see online is what you pay. No register surprise after a long international flight.
Data planning
Mongolia mobile data guide for 7-day travelers
WhatsApp video calls use about 250 MB/hour. Five 10-minute video calls per day adds 200 MB to your daily total. Add maps and social media and you reach 1.5 GB per day quickly in Mongolia. A 7-day trip at that rate needs 11GB.
For a 7-day trip, the 20GB plan at $81 covers 11GB at $4.05/GB. AT&T's roaming pass for the same 7 days reaches $84. For heavy data users, a 1-day unlimited plan costs $5.99, still under AT&T's $12/day pass.
Connectivity
Mongolia WiFi speeds and dead zones
Public WiFi networks in Mongolia are rare outside hotels and airports. For banking apps, work VPNs, and payment authentication, a cellular eSIM connection on a local network is the safer path. Plans start at $4.05/GB.
Plan your data
Mongolia trip data requirements by day
Hotels in Mongolia charge $10-$20/day for in-room WiFi — and that only covers your room. AT&T roaming adds $12/day for data outside the hotel. A 20GB eSIM on a local network at $81 covers the full 10 days everywhere, with no daily hotel WiFi fee needed.
Mongolia has one mobile operator: Mobicom. US carriers pay Mobicom for roaming access and pass that cost to you at $12/day. An eSIM connects to Mobicom directly at $4.05/GB — no carrier markup.
Local prices in Mongolia are in MNT (₮), but eSIM plans are priced in USD, eliminating exchange rate uncertainty on your data costs.
Quick reference
Mongolia Travel Essentials
102/103/105
102, 103, 105 are the emergency numbers in Mongolia. 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 C/E
Mongolia uses Type C outlets (European two round-prong). US plugs require a Type C adapter. Check that your phone and laptop chargers show 100-240V input — most modern chargers are compatible.
Multiple (UTC+7/+8)
MNT (₮)
Cash in MNT is preferred across most of Mongolia 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
One operator, Mobicom, runs all mobile coverage in Mongolia. Carrier roaming and eSIM plans use the same infrastructure — comparing costs is the only meaningful variable.
Quick tip
Mongolia uses MNT (₮). eSIM plans charge in USD at the time of purchase — you lock in the cost before travel and avoid in-country exchange rate moves.
Step by step
Mongolia mobile data setup without carrier roaming
- Check your phone supports eSIM (iPhone XS or newer, most Samsung Galaxy S20+) — LTE coverage is available on Mobicom
- Pick a 1GB Mongolia plan on HelloRoam for $5.76 — payment takes under two minutes and your QR code arrives instantly. Compare providers if you want to see alternatives first.
- Install the eSIM via the QR code HelloRoam sends to your email before you leave home so it is ready to activate on arrival
- On iPhone: tap Settings > Cellular, select your carrier SIM (not the HelloRoam eSIM), tap Cellular Data Options, and set Data Roaming to off. Full instructions with screenshots in the data roaming guide.
- On Samsung Galaxy when you land in Mongolia: open the notification shade, tap the SIM switcher, and select your HelloRoam eSIM — Mobicom registers automatically
- On Google Pixel: go to Settings > Network > Calls and SMS > WiFi Calling and enable it — your home number stays reachable in Mongolia without any voice roaming charge
Data tips
Mongolia travel data audit: where the GB go
QR code scanning for menus, payments, and venue check-ins in Mongolia uses less than 1 MB per scan. Most payment apps — Apple Pay, Google Pay, and local equivalents — work over cellular with under 2 MB per transaction. These apps add up to less than 50 MB/day total, so they are not a meaningful factor in your plan size.
Regional context
Mongolia mobile data: Asia regional patterns
A few things to know before turning off carrier roaming in Mongolia:
Coverage drops dramatically in steppe
Mobicom has widest coverage including Gobi route
Nearby
Related destinations
6 destinations near Mongolia 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?
Mongolia eSIM installation after arrival: the WiFi route
You landed in Mongolia without an eSIM. Here is what that costs and what you can still do.
All 5 providers — HelloRoam, Holafly, Nomad, Airalo, and Saily — allow post-arrival purchase and installation over WiFi. You do not need a local SIM to buy an eSIM. Most international airports in Mongolia have free WiFi in arrivals. Connect there, open a provider's app, and install a 1GB plan ($5.76 in this site's catalog) before you leave the terminal. If airport WiFi is unavailable, hotel lobby WiFi works as a fallback — most front desks in Mongolia give you the password at check-in. Last resort: turn on carrier data long enough to download the eSIM provider app (~5 MB, roughly $10 on AT&T pay-per-use), then switch to the installed eSIM immediately. That charge lands once, unlike AT&T's $12/day pass, which bills again every day of the trip.
Savings math
How much you save in Mongolia
Solo traveler
A solo traveler on AT&T International Day Pass in Mongolia for 10 days: 10 days × $12/day = $120. A 20GB eSIM on a local network costs $81 for the same 10 days. Savings: $39 (33%). Both options connect to local 4G LTE towers. The arithmetic is simple: one fixed payment versus 10 daily charges.
Family trip
A family that takes two international trips per year saves $-48 annually by switching from AT&T roaming to eSIMs. Per trip: AT&T bills $300 for 4 lines over 10 days ($12 for the first line and $6 for each extra line, per day billed). Four eSIMs cost $324 per trip. Over five years, the cumulative savings reach $-240.
AT&T roaming rate analysis
AT&T bills International Day Pass per line, not per account. A family plan with 4 lines in Mongolia: $12 for the first line and $6 for each of the other three = $30/day. For 10 days: $300. Even lines that barely use data still trigger the full daily charge. A child's phone syncing a game update overnight starts a $6 extra-line fee for that line. Four 20GB eSIMs: $324 total. Savings for the family: $-24.
All-carrier summary
AT&T: AT&T International Day Pass costs 48% more than an eSIM for Mongolia.
Verizon: Verizon TravelPass costs 48% more than an eSIM for Mongolia.
T-Mobile: T-Mobile's International Passes cost less than this eSIM plan for Mongolia.
The savings math for Mongolia is clear. Solo: $39 saved vs AT&T for 10 days. Family of four: $-24 saved. Annual (2 trips): $78 saved. All figures use the same local 4G LTE network. The eSIM costs less at every trip length and every group size.
Quick answers
Common questions about Mongolia data costs
Is eSIM cheaper than roaming in Mongolia?
In Mongolia, a travel eSIM on a local network costs $81 for 20GB over 10 days. AT&T roaming charges $12 a day, $120 for the same duration on the same towers. The eSIM cuts the data bill by 33%. This applies to both AT&T and Verizon, which charge the same $12/day rate. Rates checked June 2026.
How much does roaming cost in Mongolia?
Mongolia roaming costs per device: AT&T $120, Verizon $120 (10 days). A family of four pays $480 on AT&T. Four eSIMs on a local network: $324. Rates checked June 2026.
Does T-Mobile work in Mongolia?
T-Mobile works in Mongolia on its included allowance: 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. For 10 days of high-speed data, the cheapest pass mix is $50 (10-day pass). A Mobicom eSIM delivers full 4G LTE speed for $81. Rates checked June 2026.
AT&T fine print for Mongolia
$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.
Mongolia FAQ
Mongolia eSIM & roaming questions
Mongolia carrier roaming costs $12 a day on AT&T and on Verizon
AT&T: $12/day, or $84 a week. Verizon: $12/day. T-Mobile: 5GB or 15GB of high-speed data included on Experience plans, then at a reduced speed, or $10 for a 1 Day pass with 2GB. Travel eSIM on a local network: from $5.76 for 1GB. On the median 5 GB plan, fixed rates run from $2.01/GB on HelloRoam to $2.60/GB on Saily. HelloRoam's 7-day unlimited plan has the lowest median of the five at $21.50 across 35 countries, against $27.50 on Holafly. Every option above routes through the same local towers in Mongolia. Difference for 7 days against AT&T on that HelloRoam plan: $62.50. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
T-Mobile's included data in Mongolia runs at high speed until the allowance ends
Until the allowance ends. 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. On the same local towers in Mongolia, a travel eSIM runs full 4G LTE from $4.05/GB. The five providers differ on what happens next: HelloRoam and Holafly refund unactivated plans for 180 days, Airalo for 14. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
Mongolia roaming bills by the day, not by the gigabyte
Relying on hotel WiFi does not prevent roaming charges in Mongolia. AT&T's per-day charge fires from any background cellular contact — your phone does not need an active app, just a brief tower handshake. Per-MB billing at $2.05/MB is even more dangerous with background syncs. T-Mobile sidesteps per-day billing up to its plan's high-speed allowance, then runs at up to 256Kbps. A travel eSIM at 1GB for $5.76 gives you full 4G LTE and locks the total cost before you board.
Coverage lists decide which provider suits a Mongolia trip with extra stops
HelloRoam is the top pick when every stop is on its list: it sells Mongolia among its 185 destinations and holds the lowest median 5 GB rate here, $2.01/GB. For a route that adds stops, check each list before the price: Airalo reaches 200+ destinations, Nomad 200 and Holafly 200+. This site states no Saily count. That breadth is worth paying for only when the itinerary is still moving. A regional plan covering several countries in one bucket beats one plan per stop. AT&T sidesteps the question by charging $12 per 24 hours in every country alike, which is simple and expensive: three countries over nine days still bills $108. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
A travel eSIM replaces carrier roaming for data in Mongolia
Yes. A travel eSIM connects to Mobicom in Mongolia at $4.05/GB. Your phone runs both SIMs at once — the eSIM handles all data traffic while your home SIM stays active for calls and texts. No roaming plan is required, and your home carrier cannot charge roaming if data roaming is disabled on that SIM. The eSIM activates the moment you land in Mongolia and begins using 4G LTE speeds immediately.
The three US carriers price Mongolia roaming on different terms
None of the three US carriers offer a genuinely good deal in Mongolia. 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 Mobicom starts at $4.05/GB — a 7-day trip at average usage costs $42.53 versus $84 for AT&T. No carrier matches the eSIM on per-GB cost.
A week of Mongolia data costs $84 on AT&T
AT&T International Day Pass: $12/day, $84 for 7 days. Verizon TravelPass: $12/day, $84. T-Mobile International Pass: $10/day, $50. The base T-Mobile tier costs nothing but runs too slow to be usable. Against T-Mobile's $10/day pass, a travel eSIM on Mobicom runs roughly $42.53 for 7 days at 1.5 GB/day average usage. The eSIM is 80-90% cheaper than any paid carrier option.
Local Mongolia apps run on a travel eSIM without a local SIM
Most local apps in Mongolia — 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 $4.05/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 Mongolia
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 — Mongolia may be included in a regional plan, or you may need a Mongolia-specific plan plus a regional one.
A week of Mongolia 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 Mongolia starts at $4.05/GB on a local 4G LTE network — better per-GB value than all three carriers.
Fact check
Mongolia roaming myths — and what the data actually shows
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 $12/day. A travel eSIM on a local network covers Mongolia for $5.76 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 Mongolia.
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 Mongolia at $5.76 covers data and uses WhatsApp or FaceTime for voice at no additional carrier cost. Rates checked June 2026.
Our recommendation
Mongolia eSIM recommendation
If you want the most straightforward option for Mongolia, go with HelloRoam. HelloRoam covers Mongolia on a local network and scores 9.9/10 on our rubric, the highest of the 5 providers we price. A 1GB plan costs $5.76. Unactivated plans are refundable for 180 days, and its support replies in your own language. Holafly is the alternative for heavy data users: it states no daily cap, at a 7-day unlimited median of $27.50 on 30 Oct 2026.
Learn more
Travel guides, Mongolia
4 guides carry the parts of a Mongolia 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.
Cut your Mongolia data bill from $84 to $81
Same networks, same speed. eSIM data costs a fraction of carrier roaming in Mongolia.
Get a Mongolia eSIM