https://www.blog.google/products/project-fi/bringing-google-fi-more-people-android-and-ios/https://fi.google.com/about/phones/T&C
https://fi.google.com/about/device-promo-terms/#travel-on-fi For new phones credit comes in form of a GC *Options include: Airbnb, Delta Air Lines, Hotels.com and Southwest Airlines
*
If Fi service is paused for more than 7 days or cancelled within 120 days of activation, the value of the gift card will be charged to your Google Payments account to match the purchased price of the device. Limit one per person. This offer is only available for U.S. residents ages 18 and older, and requires Google Payments and Google Fi accounts. Unless otherwise stated, this offer cannot be combined with other offers
or $200 fi credit for IOS activation
*To qualify for the service credit, activation must be for full service (i.e., activation does not apply to a data-only SIM). Afterwards, a service credit will be applied to the purchaser’s Fi account. Customer will receive an email notifying them of the service credit after all terms and conditions have been satisfied, and the credit will be applied to the customer’s subsequent bills around 45 - 60 days after activation. If the account is paused, credits will only appear once the account is reactivated. Service credits will be applied only toward monthly service costs such as data, calls, texts, and device protection; they cannot be applied device purchase or financing.