5 ms·What phone do you use for this or is it multiple phones, and what SIM or is it multiple SIMs?by SiVal 7y agoWhat phone do you use for this or is it multiple phones, and what SIM or is it multiple SIMs?glitch003 7y agoWith Google Fi you have to have a Google Pixel Phone, and it just works. Google is a MVNO so they can buy tower time from any carrier. Edit: And yeah it's a single SIM.knotty66 7y agoUnfortunately it's only available to US customers.