Celcom mAdvance Plus or Maxis ValuePlus Internet 50?

I don't usually call and sms, so I guess 60mins call and 60sms will be enough for me. I'm not sure how much Internet usage I will need as I have never used any smartphone before. How long can a 250MB data lasts? What can I do with 250MB in a month? I heard from my friend who has 1 GB data and for them, they can't usually optimize their usage every month.

Is there any Celcom plan that offers less data but with free calls/ sms?

Thank you.