Jersey · roaming cost calculator
Roaming Price Audit: What 10 Days of Data Cost in Jersey
HelloRoam is the top pick for Jersey: its 7-day unlimited plan costs $21.50, at full speed for the first 2 GB a day, against $84 for a week on AT&T's $12-a-day pass, a $62 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.
Two prices sit on this page. AT&T bills $12 a day for Jersey and a 20GB travel eSIM at $22.49 bills once, both in dollars. HelloRoam bills in 31 checkout currencies.
Which eSIM providers cover Jersey networks
HelloRoam's Jersey eSIM uses local 5G towers. Seven days of unlimited data cost $21.50, against the $84 AT&T bills for seven International Day Pass days at $12 each.
Get eSIMHolafly delivers the Jersey eSIM QR code within minutes of payment. The plan activates on a local 5G network on arrival — no SIM swap, no roaming toggle.
Get eSIMNomad support is email-only, with no live chat and no phone line. For Jersey trips at $2.30/GB, self-service activation handles most setup without a support ticket.
Get eSIMJT covers major cities, motorways, and rail corridors in Jersey. Airalo sells into that market at $2.40/GB; rural dead zones affect both the eSIM and AT&T roaming equally.
Get eSIMIn Jersey, Saily uses a local 5G 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 Jersey
Every major carrier's published Jersey rate, side by side, with the eSIM winner highlighted.
| Carrier | Plan type | Daily | 7-day | Speed | Data limit |
|---|---|---|---|---|---|
| EE | EU Daily Charge | £2.72source | £16.50 | LTE | Fair-use |
| AT&T | International Day Pass | $12.00source | $84.00 | LTE | Plan data |
| Verizon | TravelPass | $12.00source | $84.00 | LTE | Plan data |
| eSIM · HelloRoam | 20GB data plan | — | $22.49 | 5G | 20GB |
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
Jersey data bill scenarios: AT&T without a day pass
AT&T's international pay-per-use rate is $2.05/MB in Jersey. 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 Jersey 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 Jersey: $120 on an AT&T day pass at $12 a day, against $22.49 for a 20GB travel eSIM. Both prices buy access to the same local operators.
Network coverage
Jersey signal strength and network density
JT is the only mobile network in Jersey. Every roaming and eSIM connection goes through the same towers. AT&T charges $12/day for that access. An eSIM charges $1.12/GB. Pull up AT&T's roaming rate card for Jersey and a travel eSIM plan side by side. The network is JT in both cases. The price is not. JT supports both 5G and LTE in Jersey. Neither AT&T roaming nor travel eSIMs restrict you to the slower LTE band. Both give you the fastest available signal. AT&T charges $12/day for it. An eSIM charges $1.12/GB.
Network attachment record
The networks behind both prices in Jersey
HelloRoam publishes one local operator for Jersey: JT.
One operator means no fallback network.
Where JT has no signal, an eSIM has nowhere else to attach.
HelloRoam records a 5G label against JT.
Carrier roaming meets the same ceiling, because roaming rents local networks.
Price is what separates the two options in Jersey. 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. Jersey is one of 117 single-operator destinations in that file: JT. Carrier roaming reaches the same radios, so the gap between the two prices is a billing gap.
| Operator | Network generation on file |
|---|---|
| JT | 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
Jersey data pricing: carrier vs eSIM
Here is the 14-day cost breakdown for Jersey. 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: $11.20. That is $108.80 less than AT&T, a 91% reduction for the same 5G connectivity.
The eSIM daily rate works out to $0.80 when spread across 14 days. AT&T charges $12/day, which is 15x that figure. T-Mobile's high-speed pass is $10/day. All three connect to the same local towers in Jersey.
Per-GB rates for Jersey eSIM plans: 1GB at $3.49 ($3.49/GB), 3GB at $7.99 ($2.66/GB), 5GB at $9.99 ($2/GB), 10GB at $18.49 ($1.85/GB), 20GB at $22.49 ($1.12/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 $2.79/day for 14 days.
Unlimited data for Jersey starts at $3.49 for 1 day and runs to $71.20 for 30, priced 1 day at $3.49, 3 days at $9.95, 7 days at $21.50, 14 days at $39.09, 30 days at $71.20. Unlimited here means 2GB a day at full speed before a fair-use policy applies. Catalogue prices read 29 Oct 2026.
Trip cost breakdown
What your carrier charges for each Jersey trip type
Three common trip types to Jersey and what each costs on AT&T vs a JT eSIM:
Weekend city break (3 days, 2GB): AT&T $36 · eSIM $7.99 · saves $28.01 (78%) 2-week family vacation (14 days, 15GB): AT&T $120 · eSIM $22.49 · saves $97.51 (81%) 1-month digital nomad (30 days, 50GB): AT&T $120 · eSIM $56.09 · saves $63.91 (53%)
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
Jersey airport connectivity
Airport kiosks in Jersey 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 $3.49 is an all-in price — what you see online is what you pay. No register surprise after a long international flight.
Data planning
Carrier vs eSIM data costs for 7 days in Jersey
In Jersey, mobile data fills in where WiFi is unavailable. Expect to use 1.5 GB per day across maps, messaging, and social media. A 20GB plan at $22.49 covers 11GB for 7 days.
For a 7-day trip, the 20GB plan at $22.49 covers 11GB at $1.12/GB. AT&T's roaming pass for the same 7 days reaches $84. For heavy data users, a 1-day unlimited plan costs $3.49, still under AT&T's $12/day pass.
Connectivity
Jersey WiFi access and cellular backup
Public WiFi networks in Jersey 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 $1.12/GB.
Plan your data
Planning your data usage for Jersey
Hotels in Jersey 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 $22.49 covers the full 10 days everywhere, with no daily hotel WiFi fee needed.
Jersey has one mobile operator: JT. US carriers pay JT for roaming access and pass that cost to you at $12/day. An eSIM connects to JT directly at $1.12/GB — no carrier markup.
Local prices in Jersey are in GBP (£), but eSIM plans are priced in USD, eliminating exchange rate uncertainty on your data costs.
Quick reference
Jersey Travel Essentials
999/112
999 and 112 both connect to emergency services in Jersey. 112 is the EU-standard number and works from any mobile phone, including roaming and eSIM devices, even without a registered local number. Save both before your trip.
Type G
Jersey 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.
GMT/BST (UTC+0/+1)
GBP (£)
Cash in GBP is preferred across most of Jersey 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, JT, runs all mobile coverage in Jersey. Carrier roaming and eSIM plans use the same infrastructure — comparing costs is the only meaningful variable.
Quick tip
Jersey uses GBP (£). 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
Step-by-step: set up your Jersey eSIM before you fly
- Check your phone supports eSIM (iPhone XS or newer, most Samsung Galaxy S20+) — 5G coverage is available on JT
- Pick a 1GB Jersey plan on HelloRoam for $3.49 — 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 Jersey: open the notification shade, tap the SIM switcher, and select your HelloRoam eSIM — JT registers automatically
- On Google Pixel: go to Settings > Network > Calls and SMS > WiFi Calling and enable it — your home number stays reachable in Jersey without any voice roaming charge
Data tips
Jersey data efficiency guide
Ride-hailing apps in Jersey 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
How Jersey compares to other Europe destinations for data
A few things to know before turning off carrier roaming in Jersey:
Not part of UK for roaming purposes
Nearby
Related destinations
6 destinations near Jersey 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 Austria at $0.74 a gigabyte.
Forgot your eSIM?
Jersey eSIM installation after arrival: the WiFi route
You landed in Jersey 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 Jersey have free WiFi in arrivals. Connect there, open a provider's app, and install a 1GB plan ($3.49 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 Jersey 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 Jersey
Solo traveler
A solo traveler on AT&T International Day Pass in Jersey for 10 days: 10 days × $12/day = $120. A 20GB eSIM on a local network costs $22.49 for the same 10 days. Savings: $97.51 (81%). Both options connect to local 5G towers. The arithmetic is simple: one fixed payment versus 10 daily charges.
Family trip
A family that takes two international trips per year saves $420.08 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 $89.96 per trip. Over five years, the cumulative savings reach $2100.40.
AT&T roaming rate analysis
AT&T bills International Day Pass per line, not per account. A family plan with 4 lines in Jersey: $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: $89.96 total. Savings for the family: $210.04.
All-carrier summary
AT&T: AT&T International Day Pass costs 434% more than an eSIM for Jersey.
Verizon: Verizon TravelPass costs 434% more than an eSIM for Jersey.
T-Mobile: T-Mobile's International Passes cost 122% more than an eSIM for Jersey.
EE: EE bills Jersey in pounds and this site holds no pound-to-dollar rate, so it states no EE-versus-eSIM gap. EE rates from its roaming checker, October 2026.
The savings math for Jersey is clear. Solo: $97.51 saved vs AT&T for 10 days. Family of four: $210.04 saved. Annual (2 trips): $195.02 saved. All figures use the same local 5G network. The eSIM costs less at every trip length and every group size.
Quick answers
Common questions about Jersey data costs
Is eSIM cheaper than roaming in Jersey?
In Jersey, a travel eSIM on a local network costs $22.49 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 81%. 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 Jersey?
AT&T roaming in Jersey costs $12 for each 24 hours from the first time your phone connects to a local network. The charge triggers on background data sync at landing, not intentional use. A 10-day trip costs $120. An eSIM: $22.49 flat. Rates checked June 2026.
Does T-Mobile work in Jersey?
T-Mobile works in Jersey 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 JT eSIM delivers full 5G speed for $22.49. Rates checked June 2026.
AT&T fine print for Jersey
$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.
Jersey FAQ
Jersey eSIM & roaming questions
Jersey 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 $3.49 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 Jersey. 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 Jersey runs at high speed until the allowance ends
For light use, yes. 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. Even at 256Kbps you stay reachable on WhatsApp and iMessage text in Jersey, which is more than AT&T gives you without a pass. Fixed-data eSIM plans across HelloRoam, Holafly, Nomad, Airalo, and Saily run full 5G on a local network from $1.12/GB, with no daily activation trigger. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
Jersey roaming bills by the day, not by the gigabyte
Relying on hotel WiFi does not prevent roaming charges in Jersey. 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 $3.49 gives you full 5G and locks the total cost before you board.
Coverage lists decide which provider suits a Jersey trip with extra stops
HelloRoam is the top pick when every stop is on its list: it sells Jersey 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.
One Jersey eSIM plan covers one device, with tethering for the rest
Not directly. A travel eSIM installs on one device and provides data for that device only. To share data across multiple devices in Jersey, enable the hotspot on the eSIM device — your laptop and tablet connect via WiFi. AT&T International Day Pass at $12/day covers one line; a family of four pays $48/day total. A single eSIM at $1.12/GB on JT, shared via hotspot, covers all devices for the cost of one plan — saving $193.20 on a 7-day trip for four people. Rates checked June 2026.
EU roaming caps cover EU contracts, not US carriers in Jersey
Because the rule binds European operators, not American ones. "Roam like at home" caps what a European carrier may charge its own subscribers inside the bloc. AT&T, Verizon, and T-Mobile sell US plans, so nothing in Jersey obliges them to follow it. They apply their standard international rates instead: AT&T and Verizon $12 per 24 hours, and T-Mobile 5GB or 15GB of high-speed data on its Experience plans, then up to 256Kbps. A travel eSIM skips the policy question by buying local capacity directly at $1.12/GB on a local 5G network. UK travelers should read their own tariff: Vodafone and EE include EU destinations on most plans, though not on all of them. Rates checked June 2026.
AT&T's $12 day pass against a Jersey eSIM plan price
No. AT&T International Day Pass costs $12/day in all European countries including Jersey. Over 7 days that is $84. A 5GB eSIM plan costs $9.99 for the same period on JT. The eSIM saves 88% and does not charge you on days when you only use WiFi — unlike the day pass, which triggers the moment any cellular data is used.
One plan can carry a Schengen route through Jersey
Pick on coverage count first, price second. A regional Europe plan puts the whole route under one data bucket, so crossing a border costs nothing extra. Airalo and Holafly each list 200+ destinations and Nomad lists 200. Airalo's 5 GB plan works out at $2.40/GB on the 30 Oct 2026 medians. HelloRoam covers 185 at $2.01/GB, the lowest median 5 GB rate here; Nomad runs $2.30/GB. Holafly sells unlimited only, at a 7-day median of $27.50, across 200+ destinations, level with Airalo. AT&T and Verizon charge $12/day in every Schengen country alike, so four countries over two weeks through Jersey still bills $120. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
GDPR governs what a travel eSIM records about a Jersey trip
GDPR governs how companies process personal data, not how your phone uses mobile data. A travel eSIM in Jersey connects to a local network — the same infrastructure AT&T and Verizon route roaming through. GDPR does not change connection speeds, pricing, or data limits. Both carrier roaming and travel eSIMs log metadata (connection times, data volumes) as part of standard carrier operations. GDPR applies to the provider's handling of that log data, not to your browsing or usage.
A week of Jersey 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 Jersey starts at $1.12/GB on a local 5G network — better per-GB value than all three carriers.
Fact check
Jersey 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 Jersey for $3.49 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 Jersey.
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 Jersey at $3.49 covers data and uses WhatsApp or FaceTime for voice at no additional carrier cost. Rates checked June 2026.
Our recommendation
Jersey mobile data: carrier charges vs eSIM price
If you want the most straightforward option for Jersey, go with HelloRoam. HelloRoam covers Jersey on a local network and scores 9.9/10 on our rubric, the highest of the 5 providers we price. A 1GB plan costs $3.49. 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, Jersey
4 guides carry the parts of a Jersey 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.
Your carrier charges $84 for a Jersey week. A 20GB eSIM costs $22.49.
A travel eSIM connects to Jersey networks from $22.49. No daily roaming fees.
Get a Jersey eSIM