How to get notifications working whilst on data

[ecuthbertson]

My Samsung Galaxy s4 with Optus, won't receive facebook/messenger notifications when I'm on data, then when wifi is turned on I'm bombarded with notifications of messages I've already replied to. I've had the phone since June 2013, and I can't remember a time that the notifications did work on data.

 

[Rukbat]

Did you contact Optus and ask if they even do 2G while you're on 3G/4G?