3g automatically turn on

[yappydoddy]

I just updated my phone but it now has given me problems.

i don't have mobile data and im using a prepaid card. Anyone would know that using mobile data with a prepaid card will cost a lot.

But, my phone automatically turn on 3g without me knowing, causing the money in the prepaid to be spent to 0.04.

Can someone tell me whats the problem and how to solve it?

 

[allanlaw]

Settings>Data usage>Mobile>Mobile data UNCHECKED.