“eSIM with a US number” is one search, but it covers three different products. An eSIM is just a digital SIM card. Whether it comes with a phone number depends on the plan behind it. Here is how to tell them apart.
What are the three products?
| Product | How it connects | US number included? | Texts | Best for |
|---|---|---|---|---|
| Data-only travel eSIM | Local mobile data network | Usually no | Usually none | Internet on a trip |
| US carrier voice eSIM | A US carrier’s network and plan | Usually yes | Two-way, on most plans | A full mobile line in the US |
| App-based US number, such as TripoSIM | Internet over Wi-Fi or mobile data | Yes | Depends on the app. TripoSIM receives only | A US contact number without a US carrier line |
The number-type comparison puts these next to Google Voice, free apps and porting an old number.
Type 1: a travel eSIM with data only
A data-only eSIM gets you online in another country. It does not give you a number anyone can call or text. You can still use internet apps, including a virtual number app.
A code sent to your home number still goes to your home SIM. If you want those texts while you travel, check your home carrier’s roaming terms.
Type 2: a carrier voice-and-data eSIM
A US carrier, or a prepaid brand that runs on a US carrier, can put a full mobile line on your phone’s eSIM. That usually means voice, two-way texting and data. It is the closest thing to a traditional US SIM card.
The catch is activation. Many plans expect a US address, a specific phone model or a US location when you sign up. A digital SIM does not mean you can sign up from anywhere. Check before you count on it.
Type 3: an app-based US number over your existing internet
This is what the TripoSIM US Virtual Number is. You pick a US number and use it in the TripoSIM app over Wi-Fi, a local SIM or a travel eSIM. On iPhone, add the TripoSIM web app to your Home Screen. On Android, install the TripoSIM app.
With the TripoSIM number you can:
- take calls from anyone who dials your US number
- make 300 minutes of calls a month to the US and Canada
- receive texts from US and Canadian senders
- get voicemail when you are offline
You cannot send texts from it, and it does not call 911 or other emergency numbers, so keep your local line for that. It is a phone number, not a data plan.
Can you use it for WhatsApp and app codes?
Yes. The TripoSIM US Virtual Number receives verification codes (OTP SMS) from apps, including WhatsApp and WhatsApp Business, so you can register them on your US number. A data eSIM gives you the internet connection, and the app number gives you the +1 number the code goes to. Our verification research lists the 22 apps TripoSIM tested, with dates, and our WhatsApp guide walks through the setup.
Carrier eSIMs have their own limits abroad too. Roaming prices, residency rules, payment methods and activation all depend on the operator.
Can you use both together?
Yes, and it is a common setup. The travel eSIM gives you data. The TripoSIM app uses that data for calls and incoming texts. It works the same over hotel Wi-Fi or your home mobile data.
You do not need to buy a TripoSIM travel eSIM to use the US number. Any working internet connection is enough. The yearly plan includes a $5 credit you can spend on a travel eSIM if you want one.
What should you check before buying any “US eSIM”?
- Does the plan include a US phone number? Is it a carrier line or an app number?
- Are incoming and outgoing texts both included, or only one?
- Do calls go over the mobile network, through an internet app, or not at all?
- Can you activate it from outside the US? Does it need a US address?
- What happens to the number if you stop paying, and can you move it later?
- Can it call emergency services? Never assume a virtual number does.
Which one suits you?
A short trip to the US. You mainly need maps, messages and email. Compare data-only travel eSIMs.
Living abroad with US contacts. You want delivery drivers, recruiters or clients to call a +1 number. An app-based number is usually enough. Our guide to getting a US phone number from abroad compares the routes.
Moving to the US. You will want a carrier line for texting, emergency calls and banks once you arrive. Many people start with an app number before the move and add a carrier line after. If you plan to switch, check first whether you can move the number. The TripoSIM plan does not promise that.