If your AirPods 3 keeps flashing orange while charging, your AirPods battery is below 20% and charging. At this point, it is recommended that you continue to charge the AirPods until the indicator turns green, indicating that the battery is full. If the charging time is too long or the indicator still shows orange, you may want to check the connection between the AirPods and the charging case, or try to replace the charging cable or charger.
1 Abnormal.
2 It may be that the headset is fully charged, but the charging case is not fully charged. Or there is a fault inside the charging case, and the headset cannot be charged normally.
3 It is recommended to charge the headset and the charging case separately for a period of time. If the problem persists, the charging case may need to be replaced or repaired.
That means there's something wrong with the phone.