Savings Calculator
Jersey eSIM Savings Calculator: Roaming vs eSIM (2026)
Carrier roaming in Jersey runs $10-$15/day. A 10-day trip costs $100-$150. An eSIM on JT delivers the same connection for $22.49. The math below shows exactly how much you keep.
Your carrier's roaming rate in Jersey
| Carrier | Plan | Daily Rate | 7-Day Cost |
|---|---|---|---|
| Vodafone | Roaming Passport | £6/day | £42 |
| EE | Roam Abroad | £6/day | £42 |
| AT&T | International Day Pass | $10/day | $70 |
| Verizon | TravelPass | $10/day | $70 |
Vodafone Roaming Passport
In Jersey, Vodafone connects to JT infrastructure. An eSIM accesses the same towers for $1.12/GB instead.
EE Roam Abroad
EE's fair-use threshold in Jersey is not published on its rate card. Once exceeded, speeds drop to 2G-equivalent rates while the £6/day charge continues. An eSIM plan at $1.12/GB has a defined data ceiling with no speed surprises.
AT&T International Day Pass
Checking voicemail on AT&T in Jersey is treated as an inbound international call. If the day pass has not yet activated, that single voicemail retrieval can trigger the $10 charge for the entire day.
Verizon TravelPass
Verizon does not publish a per-day data ceiling for its $10 Jersey pass. In practice, speed throttling has been reported on sustained high-bandwidth use. An eSIM at $1.12/GB specifies a defined GB limit with no undisclosed throttle.
eSIM alternative cost for Jersey
Plan tiers for Jersey
| Tier | Price | Per GB |
|---|---|---|
| 1GB | $3.49 | $3.49 |
| 3GB | $7.99 | $2.66 |
| 5GB | $9.99 | $2 |
| 10GB | $18.49 | $1.85 |
| 20GBBest fit | $22.49 | $1.12 |
Unlimited daily option
| Days | Price | Per Day | Discount |
|---|---|---|---|
| 1 days | $3.35 | $3.35 | 4% |
| 3 days | $9.63 | $3.21 | 8% |
| 7 days | $22.48 | $3.21 | 8% |
| 14 days | $43.49 | $3.11 | 11% |
| 30 days | $85.85 | $2.86 | 18% |
Which provider covers Jersey
The primary provider for Jersey is Airalo, connecting to JT's 5G network. Compare all eSIM providers
Savings breakdown
| Trip Length | AT&T | Verizon | T-Mobile HS | eSIM | You Save |
|---|---|---|---|---|---|
| 3 days | $30 | $30 | $45 | $9.99 | $20.01 (67%) |
| 7 days | $70 | $70 | $105 | $22.49 | $47.51 (68%) |
| 14 days | $140 | $140 | $210 | $22.49 | $117.51 (84%) |
| 21 days | $210 | $210 | $315 | $22.49 | $187.51 (89%) |
| 30 days | $300 | $300 | $450 | $22.49 | $277.51 (93%) |
Family and group savings
Carrier roaming charges multiply per person. eSIM savings multiply even faster for groups.
Solo traveler
Carrier: $100
eSIM: $22.49
Save $77.51
Couple
Carrier: $200
eSIM: $44.98
Save $155.02
Family of 4
Carrier: $400
eSIM: $89.96
Save $310.04
Trip length calculator
How much data you need
Maps & navigation
50 MB/hr
Social media
80 MB/hr
Video calls
250 MB/hr
Photo uploads
10 MB/photo
Music streaming
70 MB/hr
Web browsing
60 MB/hr
Real savings scenarios for Jersey
Solo traveler
A solo traveler on AT&T International Day Pass in Jersey for 10 days: $10/day x 10 days = $100. A 20GB eSIM on JT costs $22.49 for the same 10 days. Savings: $77.51 (78%). Both options connect to JT's 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 $620.08 annually by switching from AT&T roaming to eSIMs. Per trip: AT&T bills $400 (4 lines x $10/day x 10 days). Four eSIMs cost $89.96 per trip. Over five years, the cumulative savings reach $3100.40.
Business trip
Corporate travel budget impact for Jersey: a frequent traveler making 4 trips per year saves $110.04 annually by switching from AT&T to eSIM. A team of five making the same trips saves $550.20 per year. Per trip: AT&T $50 vs eSIM $22.49 per person for 5 days. Both connect to JT. The savings scale linearly with headcount and trip frequency.
Long-stay and digital nomads
For long stays in Jersey, the savings compound daily. AT&T at $10/day reaches $300 at 30 days. Two eSIM plan purchases cover the same period at roughly $100.80. An unlimited daily eSIM at $3.49/day costs $104.70 for 30 days. The eSIM costs less than one week of AT&T roaming for a full month of data.
Frequent traveler annual savings
A road warrior making 6 trips to Jersey per year: AT&T: 6 x $100 = $600/year. eSIM: 6 x $22.49 = $134.94/year. Annual savings: $465.06 (78%). That savings figure grows every year carriers maintain their current rates.
Extended stay economics
Snowbirds and seasonal travelers spending 60-90 days in Jersey: AT&T at $10/day for 60 days costs $600. For 90 days: $900. Two consecutive 30-day eSIM plans on JT: $134.40 for 60 days. Three plans for 90 days: $201.60. Savings over 90 days vs AT&T: $698.40.
Frequent flyer savings
Over a 10-year travel horizon visiting Jersey twice annually: AT&T total: $2000. eSIM total: $449.80. Decade savings: $1550.20. That is $1550.20 kept in your account for the same JT 5G connection on every trip.
Data usage savings
Light data users — email, messaging, occasional maps — use 300-500 MB/day in Jersey. Over 10 days: 4.0 GB total. AT&T still charges the full $10/day regardless: $100. An eSIM at $1.12/GB for 4.0 GB costs $4.48. Light users overpay the most on carrier day passes — the fixed fee exceeds their actual consumption value.
Couples trip savings
One partner on AT&T, one on Verizon, traveling together to Jersey: AT&T line: $100. Verizon line: $100. Combined: $200. Two eSIMs on JT: $44.98. Savings: $155.02. Both partners disable carrier data roaming and keep their home SIMs active for calls only.
UK carrier comparison
EE Roam Abroad in Jersey: GBP6/day for 10 days = GBP60. A 20GB eSIM: $22.49. EE's rest-of-world rate applies to non-EU destinations including Jersey. The eSIM saves approximately $37.51 on the same JT network.
Our verdict
The savings math for Jersey is clear. Solo: $77.51 saved vs AT&T for 10 days. Family of four: $310.04 saved. Annual (2 trips): $155.02 saved. All figures use the same JT 5G network. The eSIM costs less at every trip length and every group size.
How much can I save with eSIM in Jersey?
You save $7.75 per day by switching from AT&T roaming to eSIM in Jersey. An eSIM averages $2.25/day on JT. AT&T charges $10/day. Over a 10-day trip, the total savings are $77.51. Rates verified May 2026.
How much does roaming cost in Jersey?
AT&T roaming in Jersey costs $10 for each calendar day your phone connects to JT's network. The charge triggers on background data sync at landing, not intentional use. A 10-day trip costs $100. An eSIM: $22.49 flat. Verified May 2026.
Jersey network context
Local networks
Jersey has 1 mobile network. The primary carriers are JT, Sure JE, Airtel-Vodafone.
Connectivity notes
- Not part of UK for roaming purposes
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.
Frequently asked questions
- How much does AT&T roaming cost for 10 days in Jersey?
- AT&T International Day Pass charges $10/day in Jersey. A 10-day trip costs $100 in roaming charges. This activates automatically when your phone connects to a local network abroad.
- Is a travel eSIM cheaper than Verizon TravelPass in Jersey?
- Verizon TravelPass charges $10/day in Jersey. A 10-day trip costs $100. A 20GB eSIM covers the same trip for $22.49 on the same local network — saving you 78%.
- How much data do I need for a week in Jersey?
- Most travelers use 1-2 GB per day for maps, messaging, social media, and light browsing. A 7-day trip needs 7-14 GB. Video calls and streaming push usage to 3+ GB per day. Choose a 10GB or 20GB plan for heavy use.
- Can a family share one eSIM in Jersey?
- One eSIM stays in one phone, but most eSIM plans allow tethering (personal hotspot). A family of 4 can share a single 10-20GB eSIM through one phone's hotspot instead of paying $10/day per person for carrier roaming.
- Does T-Mobile free data work in Jersey?
- T-Mobile Magenta includes free data in Jersey, but speed is capped at 256 Kbps. That is too slow for Google Maps, video calls, or uploading photos. The high-speed add-on costs $15/day.
- How much does a 30-day eSIM cost for Jersey?
- A 30-day eSIM for Jersey depends on data volume. Metered plans (5-20GB) typically range from $8 to $35. Unlimited daily plans run $1-2/day. Both connect to the same local network as carrier roaming at a fraction of the cost.
- Do UK carriers charge for roaming in Jersey?
- Vodafone and EE charge £6/day for roaming in Jersey outside their EU free-roaming zone. A travel eSIM on the same local network costs a fraction of that weekly rate.
- How much does carrier roaming cost in Jersey?
- AT&T: $10/day ($70/week). Verizon: $10/day ($70/week). T-Mobile: free but throttled to 256 Kbps; high-speed add-on costs $15/day. Travel eSIM on JT: $3.49 for 1GB. All four options route through the same JT towers in Jersey. The price gap between carrier roaming and eSIM is $70 versus the eSIM rate for a 7-day trip.
- Is T-Mobile's free international data fast enough in Jersey?
- No. T-Mobile's free tier in Jersey runs at 256 Kbps — too slow for GPS navigation, video calls, or any app that loads images. You can send basic text messages and that is about it. The high-speed upgrade costs $15/day, matching AT&T's roaming fee. A travel eSIM on JT provides full 5G speeds at $1.12/GB with no daily activation triggers.
- How is my roaming bill calculated in Jersey?
- 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's 256 Kbps free tier sidesteps per-day billing but is too slow for apps. A travel eSIM at 1GB for $3.49 gives you full 5G and locks the total cost before you board.
- How do I set up a dual-SIM Android phone for Jersey?
- On Android, go to Settings > Network & Internet > SIMs. Your physical home SIM and the travel eSIM for Jersey appear as two separate SIM slots. Set the eSIM as the default for mobile data. Set your home SIM as the default for calls. Enable WiFi Calling on your home SIM to keep your number active for free over WiFi. The eSIM connects to JT's 5G network at $1.12/GB. With data roaming disabled on your home SIM, AT&T's $10/day and Verizon's $10/day fees cannot trigger. Steps vary slightly by manufacturer — Samsung, Google Pixel, and OnePlus all use this core settings path. Rates checked June 2026.
- Does a travel eSIM drain battery faster than roaming in Jersey?
- Both use similar battery levels when actively transferring data at 5G speeds on JT's network. With a travel eSIM plus your home SIM running simultaneously, your phone manages two profiles — a measurable but small increase in battery draw of roughly 5-10% per day over single-SIM use. AT&T International Day Pass at $10/day versus a travel eSIM at $1.12/GB: the cost difference far outweighs the minor battery difference. If battery matters in Jersey, put your home SIM in low-data mode to reduce background activity from the second profile. Rates checked June 2026.