To send and receive some photo, video, and group messages, you need to update your iPhone settings when you activate your service.
- Open iPhone Settings.
- Tap Cellular > Cellular Data Network.
- In each of the three APN fields, enter “h2g2”.
- In the MMSC field, enter "http://m.fi.goog/mms/wapenc".
- Restart your phone.
You can't use SMS delivery reports with Google Fi.