Infotainment screen blank & “compass unavailable”

[Wish]

Suggestions needed… T6.1 Ocean 2021
In France… 2 days of a 4week holiday… No history of a problem… this morning turned ignition key and… infotainment system refuses to switch on and… dash announcing “compass is currently unavailable”… so no sensors, satnav, reversing camera etc. TIA

 

[Wish]

Found a similar thread suggesting holding on/off button down for 20secs - worked a treat thank you