Go to the Flight Feed > Open Flight Alerts widget. This is where you can subscribe to the text alerts for yourself or others.


iOS

Select Subscribe (you can also do it via View button > "Add Subscriber")


You can select a person from the contacts or enter manually. Or choose any recent subscribers.


Also, you can set up alert types

Follower – all updates, including delays, gate changes, and status changes

Family - only take-off and landing notifications

Attendant - only departure updates

Welcomer - only arrival updates.


Enter the phone number in the international format (starting from the + sign). Here is the list of codes by the country: https://countrycode.org/


Android

Select configure (or if there are alerts "X More")


Tap Settings bookmark


Tap the + sign


Enter a person's credentials. 

The phone number should be in the international format (starting from the + sign). Here is the list of codes by the country: https://countrycode.org/


Also, you can set up alert types

Follower - all updates, including delays, gate changes, and status changes

Family - only take-off and landing notifications

Attendant - only departure updates

Welcomer - only arrival updates.