Not receiving push notifications on my iphone 5s while using mobile data?

I think it's because I might have a different model of the iPhone 5s because on mine there's no option for cellular, I turn on mobile data using the option mobile
Like I have to open the app to see if I have any Facebook notifications or have to open what's app to see if I have any messages
how do I turn them back on, this only happens when I use mobile data, on Wi-Fi everything works great
Anyway anything i can do to change that

What the hell is your carrier? If you're on a substandard carrier you're likely to miss out

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