The Best Multi-Network IoT SIM Cards for the United States

Streamline your IoT deployments across the U.S. with Simbase’s specialized IoT SIM, offering direct access to AT&T, Verizon, and T-Mobile on 4G, 5G, and LTE-M.

Starting at

$0.01 Per MB

All networks: AT&T, Verizon
Industrial Grade SIM
EU Data Breakout

Service Flexibility

Next-Level IoT SIMs for the U.S.

Engineered for both reliability and flexibility, Simbase is the ideal solution for seamless, always-on connectivity, whether you’re managing a single site or scaling nationwide.

Reliable Access to Top U.S. Networks

Connect across AT&T, Verizon, and T-Mobile without roaming fees or manual network switching.

IoT Connectivity That Fits Your Budget

With pay-as-you-go and high-volume pricing plans, Simbase gives you cost control without the contracts.

Real-Time Control from a Single Dashboard

Monitor usage, manage SIMs, and troubleshoot remotely with full visibility and API integration.

Connect to America's Leading Networks, including Verizon

Simbase gives you direct, non-steered access to the U.S.'s top networks, including AT&T, Verizon, and T-Mobile. Your device automatically selects the strongest available connection, optimizing for uptime and coverage with no manual configuration required.

USA

T-Mobile
Verizon

SIM subscription

Daily fee for active SIMs only

$0.01 /day

Data Usage Fee

Pay the same data rate in every country

$0.01 /MB

Inactive SIMs

No fees for inactive SIMs. Reactivate anytime

Free

Cellular IoT Connectivity for the U.S.

As the U.S. phases out 2G and 3G networks, 4G LTE and LTE-M are the new standards for IoT. With 5G adoption accelerating, Simbase ensures your devices stay ahead, whether you need low-power connections or high-bandwidth performance. Our SIMs are fully compatible with U.S. connectivity standards, making them ideal for industries like logistics, retail, industrial automation, energy, and healthcare.

Scale Your Way

Simplify Your Operations

Connect on Your Terms

Start in the USA, Scale Globally

Grow your business from a single U.S. deployment to a global footprint. Simbase lets your devices connect locally in over 190 countries, with zero roaming fees, no SIM swaps, and no carrier lock-in. Always connect to the best available network with one global SIM, wherever your devices go.

Why Simbase?

Get all features out of the box with Simbase.

Intuitive SIM Platform

Manage all SIM cards and data usage easily via our SIM platform or via APIs.

All Radio Technologies

From 2G to 5G LTE, plus new LTE-M where available - your deployment is future proof.

Multi-Network Connectivity

Most countries have multiple networks available. Our SIMs automatically switch to the best available network in each country.

Flexible Coverage

Pay just one rate for daily access and change coverage whenever you need.

Learn more about Simbase

Get started with Simbase

Connect
Simplify
Scale

Frequently Asked Questions

If any of your questions remain unanswered, reach out to our team to answer them for you.

Which IoT SIM card is best in the United States?

The best IoT SIM for the United States would be the one with access to all two major networks in the country. Providing a US break-out and provides industrial grade SIMs that can withstand any conditions.

What SIM sizes are available for the United States?

The industrial grade half-size SIM offers 2FF Mini, 3FF Micro and 4FF Nano format. So the best SIM for the United States fits any device.

What networks are available in the United States?

Simbase offers AT&T and Verizon coverage by default on the USA plan. Simply the best.