"Galileo provides ‘initial services’ since December 2016. During this initial "pilot" phase preceding the ‘full operational services’ phase, Galileo signals are

"Galileo provides ‘initial services’ since December 2016. During this initial "pilot" phase preceding the ‘full operational services’ phase, Galileo signals are used in combination with other satellite navigation systems, which allows for the detection of technical issues before the system becomes fully operational."