Yep, we are keeping a copy on us while in the state. You do need to bring the original while traveling abroad though.
Our timeline:
March 26, 2026 I-751 Submitted online
April 3rd, 2026 Received receipt notice from mail
April 4, 2026 Biometric Appointment Scheduled
April 6, 2026 Completed biometric appointment. Had to reschedule since the appointment is in the wrong state.
April 6, 2026 Notification that case is being processed by uscis