100mb iPhone 5? Is it enough?

Would 100mb be enough for iPhone 5?

I would only tweet once in a while and use mainly whatsapp, thats all nothing else, would that last me a month?
I could turn off mobile network or enter airplane mode when i'm out?

How could I make 100mb last?

Be nice please no stupid answers!

Added (1). What if I tweet via the notification center? I'll mainly be using Whatsapp but because ill be at school, il hardly be using if any.

Not enough you would need atleast 1gb the app itself runs 7.85mb. Maybe 200 mb would be the best if you receive a lot of text. And the app doesn't update often

You Can Try. 100 MB Will Be Difficult Cause In 1 Day If You Use Min Of 5 MB. Thn You Will Need 150 MB. So I Think It's Quite Impossible…

Try a 100 and if not then bump it up to 200.

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