How does a second number work on one phone?
Your phone keeps working exactly as it does today. The US number lives inside the TripoSIM app, so it does not need a SIM slot or an eSIM profile. When someone in the US calls your +1 number, the app rings like a normal call. When you call out, the person sees your US number.
TripoSIM describes it as three lines on one phone: your own SIM number for home, any data eSIM or local SIM for internet, and the US number in the app.
What can you do with it, and what not?
What you get
- A real US +1 number you choose by state or area code
- 300 minutes a month of calls to US and Canadian numbers
- Incoming calls with no roaming charges (fair use 300 minutes a month)
- Texts from US and Canadian senders, and verification codes (OTP SMS) from apps, including WhatsApp
- Voicemail and missed-call alerts
- Works over Wi-Fi or mobile data, next to the SIM you already have
What it is not
- Receive-only SMS: sending or replying to texts is not included.
- No 911 or emergency calling. Keep a local mobile line for emergencies.
- An app-based (VoIP) number, not a US carrier SIM, eSIM or mobile line.
- Calls out go to US and Canadian numbers only. Texts from other countries usually cannot reach US numbers.
Who is a second US number for?
- People with US clients or employers who want to be reached on a familiar +1 number. See US numbers for freelancers.
- People who moved abroad and still deal with US family, doctors, landlords and services. See US numbers for expats.
- Frequent visitors to the US who want one number that works before, during and after each trip. See US numbers for travelers.
- Anyone who wants privacy for marketplaces, classifieds or dating, so their own number stays private.
When is a second number the wrong choice?
Choose a US carrier plan instead if you need to send texts, call 911, or rely on mobile coverage where there is no internet. For verification codes from apps, including WhatsApp and banking apps, it works: the number receives them. Our fit checker asks seven questions and tells you honestly whether this number suits you.
How much does it cost?
The yearly plan is $100, about $8.33 a month. The monthly plan is $12.99 and you can cancel the renewal anytime. If you need the number for 8 months or more, yearly costs less. Compare both plans.