I had made an experiment to estimate how much data Android consumes on idle. The results are now out!

I lent my sister the phone today as she needed it for school. So i took the reading earlier at 07:30.

So, for 8hrs and 30 mins, my money went from Rs 22.20 to Rs 20.84 i.e. Rs 1.36 (453KB)

Here’s the extrapolated costs:-
1 hr: Rs 0.16 (53KB)
1 day: Rs 3.84 (1MB)
1 week: Rs 26.88 (9MB)
1 month: Rs 107.52 (35MB)

Assumptions:-
– You will be out all the time.
When you are at home, you would be connected to WiFi therefore it won’t be reflected on your bill
– No browsing or other manual Internet tasks were carried out.
In real life, you’ll be browsing the net occasionally, checking Facebook, reading emails etc.

Conclusion:-
It is a very bad idea to let your Android Internet on while you are out. It is recommended to deactivate data network whenever you don’t need it.