Can I use one phone to display all my family’s mobile boarding passes?

No – each person must be able to display their own boarding pass independently, and each boarding pass must be sent to a separate email address or mobile phone number.

Members of your group with mobile devices can use mobile boarding passes, and those without devices can use eboarding passes.

Related questions

Can I make a booking online with my credit card if I am not travelling myself?
What is my allowance for cabin baggage?
What are the online payment rules?