We recommend that you check your phone's compatibility with our SIMs prior to leaving for the US! Several popular international phones will not be compatible with US network frequencies and bands.
Because our SIMs use the T-Mobile network, you can check your phone's compatibility here: https://www.t-mobile.com/resources/bring-your-own-phone
Your phone will have to be unlocked, in order to use our SIM.
To check compatibility, all you have to do is enter your phone's IMEI number in the 'Enter IMEI*' field. You can find your IMEI number under your phone's 'About' page.
If T-Mobile's checker informs you that your phone is not compatible with their network, we recommend purchasing a phone to use while you are in the US!