Roscosmos successfully restored communications with Foton-M at 4:05 UTC on Saturday, but details on what caused the loss of uplink were not given. It is unknown how stable communications are and if the problem could occur again at some point in the mission. Telemetry from the spacecraft remains nominal, indicating that all experiments and systems are still operating according to plan. Roscosmos said in a statement that teams were investigating the causes of the problem to ensure the mission will not be hit by a communications drop out again.