Destinations
Internet on a US road trip: what to sort out before you set off
There are stretches of hours with no coverage and everything runs through apps. What to download, what to write down and how not to depend on signal.
Irene Salazar 8 min Photo by Chuang XY on Unsplash An American road trip carries a built-in contradiction: it is the trip where you need your phone most and the trip where you can rely on it least. Everything runs through apps, from the rental car to the national park entrance, and at the same time there are stretches of hours without a single bar of coverage.
The answer is not a bigger data plan. It is preparing the trip so the gaps do not matter.
Where you will have no signal
| Where | What to expect |
|---|---|
| Big cities | Wide 5G, no trouble |
| Interstates in the east | Good, with short gaps |
| Interstates in the west | Long stretches with no signal |
| National parks | From token to none at all |
| Secondary roads inland | Very variable by carrier |
The rural coverage maps of the three big American carriers do not line up, so which network your plan uses matters more here than at any other destination. That detail is in the plan's technical sheet.
What to download, no exceptions
- The map of the WHOLE route, not just the cities. With the map downloaded, in-car navigation works with no data, voice guidance included.
- Music and podcasts for the drive. On a road with no coverage, stuttering playback eats data and still does not sound right.
- Accommodation and park bookings, in a format you can open with no connection.
- Boarding passes for domestic flights, because that is where an airport with no signal hurts most.
What to write down on paper or in your contacts
Calls work in places data does not reach, so a number saved in your contacts is worth more than an app.
- The roadside assistance number of the car rental company.
- The travel insurance number, along with the policy number.
- The number of each night's accommodation.
- The number of your country's nearest mission along your route.
National parks, which are a case of their own
In Yellowstone, Zion, Death Valley or much of the Grand Canyon you have to plan for no signal, whatever plan you are carrying. There, three habits are worth more than any tariff.
- Download the park map and its official leaflet before you drive in.
- Tell someone what you are doing that day. This is not scaremongering: rescues depend on somebody noticing you are missing.
- Set off with a full tank and with water. The distances between services are longer than they look on the map.
What a route actually uses
Navigation uses little per hour, and there are a lot of hours. What really pushes the number up on the road is streaming music and looking for somewhere to sleep as you go.
The full calculation, compared with a city trip, is in how much data fifteen days in the United States needs.
And the alerts that will go off
The American emergency alert system pushes warnings to your phone about tornadoes, floods, fires and missing people. They reach any phone with coverage, they are loud, and it is not always obvious where they came from.
This is not a fault with your phone or your plan: it is the system working, and in tornado or wildfire season you are better off leaving it on.
Frequently asked questions
Is there coverage along a whole road trip route?
No. In the west there are long interstate stretches with no signal, and in national parks there is practically nothing, with any carrier.
Does navigation work with no data?
Yes, if you download the map beforehand on wifi. Directions and voice guidance work offline; what you lose is live traffic and some searches.
Which network suits a road trip?
Whichever covers your route best, because the rural maps of the three big American carriers do not line up. Which network each plan uses is in its technical sheet.
What should I write down in case I run out of data?
The numbers for the rental company, the insurer with your policy number, each night's accommodation and your country's mission. Calls work where data does not reach.
Why are alarms going off on my phone?
It is the country's emergency alert system: tornadoes, floods, fires and missing people. It reaches any phone with coverage and you are better off leaving it on.
