Same this is happen to our family. We just added 3 phones on the shaw plan. We can't receive incoming calls when on the Shaw network and phone is not in use
@rorr -- we just added 3 phones
Did you activate them at a Shaw retail-store, or at some kiosk (such as inside my local Walmart) that tested them, and inserted a new SIM card?
Were they brand-new, never activated, phones, or are you switching them from another wireless company?
Are the phones "locked" to that previous company (Rogers? Bell? Telus?) or are they "unlocked"?
If they are iPhone devices, access "Settings", and then "Reset", and then "Reset Network Settings", and try again to send/receive.
Note that this is a peer-to-peer discussion forum, not a path to Shaw (Mobility) Support. Please contact them, for more trouble-shooting.