Russia reportedly jammed the satellite signal on a Royal Air Force plane used by British Defence Secretary Grant Shapps to travel from Poland back to Britain. The GPS signal was interfered with for around 30 minutes as the plane flew near Russia's Baltic exclave of Kaliningrad, Reuters reported, citing government sources. Mobile phones could no longer connect to the internet and the aircraft was forced to use alternative methods to determine its location. This interference also affected the plane's WiFi and forced pilots to rely on alternative navigation systems.