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best sim card usa

The 8 Best USA SIM Cards in 2021

Author: Anthony Lee

Phone & Tablet Expert

best usa sim card

Traveling to the USA and looking for a Prepaid SIM Card? Just looking for a good restaurant, calling a taxi over Uber, getting travel tips or just start navigating via Google Maps? What we take for granted can quickly become very expensive due to the high roaming costs in the USA.

For your USA trip there are several ways to get around these costs and use your smartphone as usual.

Explore the USA on your own and use your smartphone as a navigation device and constant companion. Whether by car or by camper beech on the way relaxed the next hotel or the next camping ground.

A prepaid SIM card is the simplest and cheapest solution, because you have the full cost control and no long or opaque contracts. In addition, when booking a rental car or a hotel, a US phone number is required. Below you will find our selection of recommended SIM Cards for the USA.

What Is The Best USA SIM Card?

Depending on where you are in the US, it is important to select the right network in advance. In general, it can be said that AT & T provides the largest network in the USA and thus also provides the best network coverage.

The network of AT&T is in good hands in major cities such as New York, Hawaii, Las Vegas, Miami, Los Angeles and on tours in a camper or car across the States. Only in a few areas the reception is very bad.


AT & T is one of the top top providers in the US. Best network coverage is guaranteed here. In addition to a super network, a wide range of stores is available for any technical support. The employees help with the set-up or, in the event of a defect in a SIM card, can exchange them (partly) free of charge. Unlike many other providers, AT&T relies on a world-class user experience. This includes above all the technology used for the transmission of data and the HD Voice technology.

AT&T Prepaid Sim Card Unlimited Talk, Text, & Data
  • Please Choose store Tripsim, if you choose…
  • High Speed:You will get 22GB data up to 4G speeds in USA…
  • Free Calls and SMS: Unlimited Voice and texts within USA…
  • Travel Sim Card: Valid for 30 days (Start from your…
  • Compatible Phones : Compatible with unlocked Non-Contract…

H2O wireless

H2O Wireless is a third-party US provider that uses AT&T’s best network coverage. H2O Wireless attaches great importance to international communication. Each tariff automatically includes a landline flatrate to Germany, Austria, Switzerland, Belgium, Netherlands, Italy and many other European countries. In addition, there are different free minutes in foreign mobile networks. Germany is between 35 and 70, Austria 55 to 110 minutes and Switzerland between 18 and 37 minutes.

h2o SIM Starter Kit
  • h2o Wireless 3-in-1 (Triple) GSM SIM Card with Standard,…
  • 4G LTE Data for lightning fast streaming
  • Stay covered on a nationwide 4G LTE network with no contract…
  • Unlimited international talk to 50+ countries and unlimited…
  • 10% Auto Recharge discount when you sign up for automatic…

Three - Pay As You Go Sim Card

Founded in Hong Kong, but mostly known for its operations in the United Kingdom, Three has evolved to be one of the major internet service providers around the world. Today, Three provides mobile internet service to more than 130 million customers. With the SIM Cards offered by the Three and the Go Roam program, you can browse through the internet in more than 70 countries worldwide. The full coverage can be found here.

Three Pay As You Go 10GB
  • Pre-loaded with 10 GB data, unlimited minutes and texts
  • We have added more data to our 5 GB add-on – now you can…
  • Go roam and use your phone abroad in 71 destinations
  • Allowance lasts up to 30 days
  • SIM fits any unlocked 3G or 4G phone
Three Pay As You Go 12GB
  • 12GB data to use in 71 destinations, 3000 voice mins and…
  • Covers Europe inc UK, Italy, France, Spain, Germany, USA,…
  • Use in a phone only. No tethering, personal hotspot or video…
  • Easy activation, No personal ID required for registration ,…
  • Trio SIM suitable for all cell phones. Can be recharged for…

OneSimCard - USA Prepaid Sim

When it comes to international SIM Cards, we definitely cannot overlook OneSimCard. This international mobile service providers offered Prepaid SIM Cards for more than 200 countries worldwide. You can save 85% roaming charges when using their USA SIM Card outside of your home country. Furthermore, they allow free incoming calls from 162 countries. So if you need to enjoy mobile data service abroad and maybe would like to be able to receive calls, then OneSimCard is the right choice for you!

OneSimCard Prepaid International 3-in-one SIM Card
  • Mobile coverage in over 200 countries, free incoming calls…
  • SIM offers a European and US phone number with $10 credit…
  • 5 GB of international roaming data available for just $29.95…
  • Wi-Fi and mobile data calling using same phone number…
  • Free incoming texts from everywhere and outgoing texts…
OneSimCard Universal 3-in-one SIM Card
  • Mobile coverage in over 200 countries, free incoming calls…
  • Includes 2 phone numbers: European & USA
  • 4G service in 50+ Countries
  • Discount Data, Voice and SMS Packages Available
  • Add Additional Phone Numbers in Over 60 Countries

KeepGo - USA Roaming Sim Card

You may have not heard about KeepGo before but this company is an official partner of Vodafone, Telefonica and AT&T. With its offices in Israel, Netherlands and the USA, KeepGo provides products across many segments such as Broadband Internet, Smart Wearables, GPS Tracker and more. The SIM Card provided by KeepGo is valid forever – without any contract! If you need to use, you simply upload some credit and off you go. It is the most convenient option available if you are traveling across several times per year.

Keepgo Global Lifetime 4G LTE Data SIM Card
  • Includes 1GB mobile data credit valid for 1 year, quick data…
  • 24/7 email and chat Customer Support
  • Mobile internet coverage in more than100+ most traveled…
  • Activates in minutes. Slide it into your phone or tablet,…
  • Comes with a set of SIM adapters. Compatible with most…

Mobal - USA Sim for Calls & Texts

Mobal was founded by an international traveler who became frustrated by the insane roaming costs abroad. Their focus is providing service to American travelers going to Europe. Nonetheless, they offer a wide range of Talk & Text only SIM cards that allow you to connect to mobile internet in the USA.

Mobal World Talk & Text SIM Card
  • Works in over 190 countries
  • No Ongoing Fees Ever!
  • Pay as you use whenever you travel
  • No Contract, No Expiration
  • $15 For Life

Benefits of a USA SIM card

No Roaming Charges

Make calls, write text messages and use the mobile data without causing high roaming charges.

Like At Home

You can continue to use your apps like Whatsapp, Skype, Netflix, Google etc. in the USA.

WhatsApp & Skype

Whatsapp can be used with a US prepaid SIM as well as at home. It is even possible to continue to use your current phone number. Thus, contacts and chats are preserved. Once Whatsapp asks if you want to use a new phone number, just deny it. 

The Skype number remains as it is digitally received. Skype is easy to use with mobile internet.


Streaming via Netflix or YouTube is ​​no problem. But watch out for your data limits. Otherwise you might run out of mobile internet quite fast.

Uber in the USA

The service Uber belongs to the standard program in the USA. Here you have to deposit only your US phone number and you can get picked up from the airport or drive across the city.

Sightseeing and cool locations in the USA

We ourselves have had very good experience with Tripwolf. The easiest way would be here to download the respective guide already at home via WiFi. Otherwise you just use the usual suspects: Tripadivsor and Yelp

Our Picks: The Best USA SIM Cards

H2O Wireless $30 Plan SIM Starter Kit | 6 GB of LTE Data + International Talk & Text, Yellow (H2O-30 SIM BUNDLE)
4G LTE Data for lightning fast streaming; Stay covered on a nationwide 4G LTE network with no contract prepaid service
Three 10GB Data Pay As You Go SIM
Pre-loaded with 10 GB data, unlimited minutes and texts; Go roam and use your phone abroad in 71 destinations
PrePaid Europe (UK THREE) sim card 12GB data+3000 minutes+3000 texts for 30 days with FREE ROAMING / USE in 71 destinations including all European countries
Use in a phone only. No tethering, personal hotspot or video streaming allowed.; Trio SIM suitable for all cell phones. Can be recharged for more data.
OneSimCard Prepaid International 3-in-one SIM Card for Over 200 Countries with $10 Credit – Voice, Text and Mobile Data as Low as $0.01 per MB. Compatible with All Unlocked GSM Phones
SIM offers a European and US phone number with $10 credit for any usage; 5 GB of international roaming data available for just $29.95 in key countries
Lifetime Prepaid Data Sim Card + 1GB Credit
24/7 email and chat Customer Support
World Talk & Text SIM Card by Mobal. Works in Over 190 Countries – Just $15 for Life – No Monthly Fees, No Minimum Usage, No Contract
Works in over 190 countries; No Ongoing Fees Ever!; Pay as you use whenever you travel; No Contract, No Expiration

Last product update on 2021-02-25 | Source: Amazon Affiliate