eSIM for United States

How to install your United States eSIM in 3 steps

1. Buy your plan. Buy your United States eSIM before you leave home and pick a data size that matches your trip - a long weekend in Denver needs a lot less than a two-week national-parks road trip.
2. Scan and install on Wi-Fi. Install it while you still have Wi-Fi, because an eSIM profile has to download over the internet and won't install once you're already sitting on the tarmac with no signal. On iPhone: Settings > Cellular > Add eSIM, then scan the QR code. On Android: Settings > SIM Manager > Add eSIM. Do this before you board - not after you land at John F. Kennedy International in New York or Los Angeles International.
3. Activate on arrival. Once you've cleared customs, open your cellular settings, turn on the new eSIM line, and enable data roaming for it specifically. There's no registration step for eSIM activation in the United States, so you should be connected to a US network within a minute or two of touching down.

Mobile network coverage in United States

Three carriers run the country. Verizon has the strongest rural and 4G LTE footprint and is generally the safest pick once you're off the interstate. AT&T is close behind, offering a balanced network across cities and suburbs. T-Mobile has pushed hardest into 5G, and its 5G Ultra Capacity network now reaches almost the entire population.

Cities

In New York City, Los Angeles, Chicago, Denver, Dallas, Houston, Miami, Philadelphia, Boston, and Atlanta, mid-band 5G is strong from all three carriers, often reaching several hundred Mbps in good conditions. T-Mobile's 5G tends to be the fastest of the three, while Verizon and AT&T 5G can run noticeably slower in some neighborhoods. Ordinary 4G LTE, which still carries plenty of everyday traffic, remains solid and reliable across all three networks.

Rural areas, coasts, and mountains

Once you leave the interstate, coverage thins out quickly - rural counties see several times more dead zones than cities, and Verizon and AT&T tend to hold a signal the longest in these gaps. Mountains and wilderness areas can drop to no coverage at all, and national parks like the Grand Canyon and Yellowstone really only have service around developed areas and viewpoints; step half a mile down a trail and you'll likely lose your bars. Hawaii's resort towns - Honolulu, Waikiki, Kihei, Kona - have near-total 4G coverage, while routes like the Hana Highway, Mauna Kea, and the Na Pali Coast have essentially none.

Getting around and transit

On the ground, highway corridors between major cities are well covered by all three carriers, so cross-country road trips rarely leave you without a signal for long. Underground is a different story: New York's subway has only recently begun rolling out 5G on select lines, but full system coverage remains a long way off, so don't rely on a signal for most of a ride below street level. In Alaska, coverage clusters around Anchorage, Juneau, and the main highway routes, with the vast interior largely unserved by the big three national carriers.

How much data do you need for your trip to United States?

Match your eSIM to how you'll actually use your phone - maps and messaging use very little, streaming and hotspot use a lot more.

eSIM vs. roaming vs. a local SIM in United States

Here's how the three main options compare for a trip to the United States.

If you're staying for months rather than weeks - a long work posting or an extended family visit - a local SIM can work out cheaper and gives you a genuine US number, so it's worth considering for very long stays.

Tips for staying connected in United States

• Install your eSIM before you leave home - it needs internet access to download, so waiting until you're at the gate is too late.
• Dial 911 for police, fire, or medical emergencies. It's the universal emergency number, works without an active data plan or carrier lock-in, and Enhanced 911 location services cover the vast majority of the country.
• Keep your regular SIM active alongside your travel eSIM on dual-SIM mode so banking apps and messaging on your home number keep working while the eSIM handles US data.
• Heading into a national park like the Grand Canyon or Yellowstone? Download offline maps first - coverage exists mainly around visitor centers and viewpoints, not on the trails.
• In Hawaii, expect strong 4G in resort towns like Waikiki and Kona, but plan for zero signal on drives like the Hana Highway or up Mauna Kea.
• If you're crossing into Canada partway through your trip, switch over to a dedicated eSIM for Canada rather than relying on cross-border roaming.

Traveling beyond United States?

Plenty of US trips continue north, south, or out into the islands. Crossing the border up top, grab an eSIM for Canada; heading south, there's an eSIM for Mexico. Island-hopping from Florida or the Southeast, look at an eSIM for Bahamas, eSIM for Jamaica, eSIM for Dominican Republic, or eSIM for Puerto Rico. For coverage across the wider continent on a single plan, see our North America eSIM.