Amtrak · Mobile, AL – New Orleans, LA
Mardi Gras Service Cell Service & Coverage Map
Modeled coverage on board the Mardi Gras Service, Mobile, AL to New Orleans, LA. On the train, AT&T has the most solid coverage at 96% of the route, ahead of T-Mobile (84%) and Verizon (80%). Amber stretches are spotty: signal often works but may drop. AT&T's longest true dead zone runs about 1 miles between Bay St. Louis and New Orleans.
The whole line at a glance
New Orleans, LA on the left, Mobile, AL on the right. Scroll sideways on a phone. Hover a band for its mileposts. Verizon, on the train.
Carriers compared on the train
| Carrier | Coverage mix | Solid | Spotty | 5G | Dead-zone miles | Longest gap |
|---|---|---|---|---|---|---|
| AT&T Best on board | 96% | 3% | 69% | 1 | 0.9 mi | |
| T-Mobile | 84% | 13% | 69% | 3 | 2.0 mi | |
| Verizon | 80% | 20% | 32% | 0 | 0.0 mi |
Coverage summary
Verizon · On the train (in-vehicle model)
of the route has solid Verizon service on the train, plus 20% spotty
has modeled 5G; 24% at the faster 35/3 Mbps tier
longest dead zone (no signal in either model), near Mobile, AL
longest unbroken covered stretch, near Gulfport, MS
- 5G NR · 35/3 Mbps 23.7%
- 5G NR · 7/1 Mbps 7.3%
- 4G LTE 47.5%
- Spotty (outdoor-strength only) 19.3%
- Not yet processed 2.2%
Verizon · Outdoor model
of the route has solid Verizon service outdoors
has modeled 5G; 60% at the faster 35/3 Mbps tier
longest dead zone (no signal in either model), near Mobile, AL
longest unbroken covered stretch, between Mobile and Pascagoula
- 5G NR · 35/3 Mbps 59.7%
- 5G NR · 7/1 Mbps 13.9%
- 4G LTE 24.2%
- Not yet processed 2.2%
AT&T · On the train (in-vehicle model)
of the route has solid AT&T service on the train, plus 3% spotty
has modeled 5G; 43% at the faster 35/3 Mbps tier
longest dead zone (no signal in either model), between Bay St. Louis and New Orleans
longest unbroken covered stretch, between Mobile and Pascagoula
- 5G NR · 35/3 Mbps 42.8%
- 5G NR · 7/1 Mbps 25.1%
- 4G LTE 26.4%
- Spotty (outdoor-strength only) 2.9%
- No modeled coverage 0.6%
- Not yet processed 2.2%
Plan downloads and calls around Bay St. Louis–New Orleans (0.9 mi without coverage).
AT&T · Outdoor model
of the route has solid AT&T service outdoors
has modeled 5G; 55% at the faster 35/3 Mbps tier
longest dead zone (no signal in either model), between Bay St. Louis and New Orleans
longest unbroken covered stretch, between Mobile and Pascagoula
- 5G NR · 35/3 Mbps 55.0%
- 5G NR · 7/1 Mbps 39.0%
- 4G LTE 3.1%
- No modeled coverage 0.6%
- Not yet processed 2.2%
Plan downloads and calls around Bay St. Louis–New Orleans (0.9 mi without coverage).
T-Mobile · On the train (in-vehicle model)
of the route has solid T-Mobile service on the train, plus 13% spotty
has modeled 5G; 51% at the faster 35/3 Mbps tier
longest dead zone (no signal in either model), between Bay St. Louis and New Orleans
longest unbroken covered stretch, between Bay St. Louis and New Orleans
- 5G NR · 35/3 Mbps 50.6%
- 5G NR · 7/1 Mbps 17.4%
- 4G LTE 14.5%
- Spotty (outdoor-strength only) 13.1%
- No modeled coverage 2.3%
- Not yet processed 2.2%
Plan downloads and calls around Bay St. Louis–New Orleans (3.3 mi without coverage).
T-Mobile · Outdoor model
of the route has solid T-Mobile service outdoors
has modeled 5G; 90% at the faster 35/3 Mbps tier
longest dead zone (no signal in either model), between Bay St. Louis and New Orleans
longest unbroken covered stretch, between Mobile and Pascagoula
- 5G NR · 35/3 Mbps 90.5%
- 5G NR · 7/1 Mbps 3.7%
- 4G LTE 1.0%
- No modeled coverage 2.7%
- Not yet processed 2.2%
Plan downloads and calls around Bay St. Louis–New Orleans (3.8 mi without coverage).
Station to station
In timetable order from Mobile, AL. Distances are along the track. Follows the carrier and model selected on the map.
| Segment | Miles | Coverage mix | Solid | 5G | Longest gap |
|---|---|---|---|---|---|
| Mobile → Pascagoula | 40 | 85% | 33% | — | |
| Pascagoula → Biloxi | 20 | 100% | 46% | — | |
| Biloxi → Gulfport | 12 | 100% | 34% | — | |
| Gulfport → Bay St. Louis | 15 | 100% | 16% | — | |
| Bay St. Louis → New Orleans | 55 | 61% | 29% | — |
| Segment | Miles | Coverage mix | Solid | 5G | Longest gap |
|---|---|---|---|---|---|
| Mobile → Pascagoula | 40 | 100% | 77% | — | |
| Pascagoula → Biloxi | 20 | 100% | 97% | — | |
| Biloxi → Gulfport | 12 | 100% | 79% | — | |
| Gulfport → Bay St. Louis | 15 | 100% | 35% | — | |
| Bay St. Louis → New Orleans | 55 | 100% | 75% | — |
| Segment | Miles | Coverage mix | Solid | 5G | Longest gap |
|---|---|---|---|---|---|
| Mobile → Pascagoula | 40 | 99% | 82% | — | |
| Pascagoula → Biloxi | 20 | 100% | 65% | — | |
| Biloxi → Gulfport | 12 | 100% | 100% | — | |
| Gulfport → Bay St. Louis | 15 | 100% | 82% | — | |
| Bay St. Louis → New Orleans | 55 | 92% | 52% | 0.9 mi |
| Segment | Miles | Coverage mix | Solid | 5G | Longest gap |
|---|---|---|---|---|---|
| Mobile → Pascagoula | 40 | 100% | 99% | — | |
| Pascagoula → Biloxi | 20 | 100% | 94% | — | |
| Biloxi → Gulfport | 12 | 100% | 100% | — | |
| Gulfport → Bay St. Louis | 15 | 100% | 93% | — | |
| Bay St. Louis → New Orleans | 55 | 98% | 95% | 0.9 mi |
| Segment | Miles | Coverage mix | Solid | 5G | Longest gap |
|---|---|---|---|---|---|
| Mobile → Pascagoula | 40 | 80% | 73% | — | |
| Pascagoula → Biloxi | 20 | 89% | 71% | — | |
| Biloxi → Gulfport | 12 | 100% | 95% | — | |
| Gulfport → Bay St. Louis | 15 | 100% | 90% | — | |
| Bay St. Louis → New Orleans | 55 | 79% | 56% | 2.0 mi |
| Segment | Miles | Coverage mix | Solid | 5G | Longest gap |
|---|---|---|---|---|---|
| Mobile → Pascagoula | 40 | 100% | 100% | — | |
| Pascagoula → Biloxi | 20 | 100% | 100% | — | |
| Biloxi → Gulfport | 12 | 100% | 100% | — | |
| Gulfport → Bay St. Louis | 15 | 100% | 100% | — | |
| Bay St. Louis → New Orleans | 55 | 93% | 91% | 2.0 mi |
Mardi Gras Service cell service FAQ
Does the Mardi Gras Service have cell service?
For most of the trip, yes. Inside the train, solid coverage (the FCC's in-vehicle model) reaches 96% for AT&T, 84% for T-Mobile, 80% for Verizon of the 143-mile route from Mobile, AL to New Orleans, LA. Much of the rest is spotty rather than dead: AT&T has some signal on 99%, T-Mobile has some signal on 98%, Verizon has some signal on 100%.
Which carrier is best on the Mardi Gras Service?
AT&T has the most modeled on-train coverage (96%), with 5G on 69% of the route. T-Mobile covers 84% and Verizon covers 80%.
Where is the longest dead zone on the Mardi Gras Service?
AT&T: about 1 miles between Bay St. Louis and New Orleans. T-Mobile: about 2 miles between Bay St. Louis and New Orleans. Verizon: about 0 miles near Mobile, AL.
Does Amtrak Wi-Fi work on the Mardi Gras Service?
Amtrak Wi-Fi relies on cellular networks, so it generally weakens or drops in the same places your phone does. Expect it to be unreliable through the dead zones shown on this map.
How accurate is this coverage map?
It reflects carrier-reported modeled coverage published by the FCC (data as of Dec 31, 2025). It is not an onboard measurement. BarTrakr shows the FCC's in-vehicle model by default; the outdoor model is available with the Outdoor switch.
Can I use BarTrakr on the train without signal?
Yes. Tap “Save for offline” before you board. The route, coverage data and map background up to zoom 10 are stored on your device, and live tracking uses your phone's GPS, which works without cell service.
About this data
- Coverage: FCC Broadband Data Collection mobile coverage for Verizon, AT&T, T-Mobile, release D25 (as of Dec 31, 2025, published Oct 13, 2026).
- Route: U.S. DOT / BTS National Transportation Atlas Database, Amtrak Routes. Stations and stop order: Amtrak GTFS.
- On the train: colored where the FCC in-vehicle model shows coverage; amber (spotty) where only the outdoor model does; red where neither does.
- Stretches shorter than a quarter mile are merged into their neighbors; at train speed they last only seconds.