Hello dear readers In August 2019 I bought a Citroen C4 Spacetourer (new). In this vehicle the directional speed specifications (50, 60, 80 etc.) are missing in the navigation device via satellite. Also no signal detection is not available – sad but true! Especially when driving on overland roads these specifications are very helpful and were to date available on all navigation devices I knew. Who has experience and can give me advice as to how to get a suitable n additional device comes that I could install and use independently of the navigation device in the vehicle. The IPhone as additional navigation is unusable, too small and needs far too much battery. Thank you in advance Margrit