I would give 0 *s if I could. This is a bit of a scam. I got the SIM kit & the app works fine.... Over wifi ONLY . & when you try to make a call you get a FAKE ringing sound as if it's connecting but it's not. I called my house line & work number & this happened every time. It also does the same for incoming calls . When someone calls the number it gives the illusion call is being connected by playing ringing sound but phone never rings, then says "user can't be reached" beware SCAM!!!