To receive text message (SMS) updates for filed flights, enter a cell phone number on the flight plan page under FLIGHTS > SELECTED FLIGHT > PROCEED TO FILE. In addition to messages sent directly to the app, ForeFlight will also send a text (SMS) with updates regarding your flight plan, such as ATC rejections, flight delay notices, slot allocation messages, and overdue VFR flight plan reminders.
U.S. phone numbers should be entered [area code][phone number]. For example, (555) 555-5555 would be entered as 5555555555 in the `Phone` field on the File page.
Non-U.S. phone numbers should be entered as +[country code][number]. For example, +44 5555 55 5555 would be entered as +445555555555 in the `Phone` field on the File page.