German phrase
Müssen ~ in ~ geschaltet werden?
Meaning
Must ___ be switched to ___?
When to use it
It asks if a switch is needed. It politely checks whether something must be set to a new state.
Example dialogue
Müssen Handys in den Flugmodus geschaltet werden?
Must mobile phones be switched to airplane mode?
Ja, bitte schalten Sie Ihr Handy vor dem Start in den Flugmodus.
Yes, please switch your phone to airplane mode before takeoff.