Is TwinPhone the same as Wi-Fi Calling?
Short answer
No. Wi-Fi Calling is a carrier feature: it carries your own SIM number over Wi-Fi and bills calls under your plan, so it needs an active SIM with a carrier that offers it. TwinPhone needs no SIM; it calls over Wi-Fi or mobile data from a browser or the app and bills per minute from a prepaid balance.
How do they compare?
| Wi-Fi Calling | TwinPhone | |
|---|---|---|
| Needs a SIM and a mobile plan | Yes | No |
| Number the other person sees | Your mobile number | A shared TwinPhone number, your rented US or Canadian number, or your verified mobile ($1.00/month) |
| Works on a laptop | Depends on the carrier | Yes, in Chrome, Edge, Firefox, Brave or Safari |
| International calls | At your carrier's international rates | Per minute, rate shown before the call; $0.02/min to the US and Canada |
| Emergency calls | Usually supported by the carrier | Not supported |
Abroad, which one helps?
Wi-Fi Calling abroad depends on your carrier: some bill calls home as domestic, others charge international rates or turn the feature off outside the home country, so check yours. TwinPhone works the same in every country where you can use it, because the price is set by the number you call, not by where you are.
Can I use both?
Yes. They do not interfere: keep your SIM for your own number, and use TwinPhone for calls from a computer or for a second US or Canadian number (from $3.19/month).
More questions
Does the TwinPhone app work with no SIM in the phone?
Yes, on Wi-Fi. The app calls over the internet, so the phone needs no SIM card for it.
Can I call emergency numbers with TwinPhone?
No. 911, 112 and other emergency numbers cannot be dialled from TwinPhone.
Still stuck?
Write to support@twin-phone.com from the email on your account. We reply to every message.
Contact support