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

Is it possible to change the destination on the return sector on a Business Rewards redemption booking? For example, change London-Dubai to Frankfurt-Dubai.
Which airports offer mobile boarding passes on your smart phone?
Which airports offer eBoarding Passes?