To not go over internet usage on iPhone 3gs?

Ok so I still have about 15 days until it starts over & I'm already at 90%! I keep checking to see how much internet data I have used and the number keeps going up but I'm not even using the internet! So what else uses up the internet data? & what can I do to stop it? Also what does enabling 3g do because right now that is on so should I turn it off? And what about cellular data which is also on?

Set fire to your modem and hide in the bathroom

Go into Settings<General<Network<Cellular Data<Switch to off. You shouldn't use any more data then. Apps & Safari use data. Also turn off Location Services if it is on. Basically everything on the iPhone uses data. Until your days turn over strictly use Wi-Fi and turn off everything that envolves data including data roaming and enabling 3G.

Turn it off and you can't use any. Applications in the background sometimes use the data network…

Turn the data network off when you arent using the internet.

Also depending on which network you are on you can get an app that tells you what minutes, data and texts you have left. I know O2 has one.

  • Why did I go over my data usage on my iPhone? I can't go over 2GB. Last month I was at 1.260, I checked minutes before the reset/next month (12AM). It's been 2 days since reset and IIm at 0.383. I don't get how this all works but apparently I went over.
  • What is (does) and unlocked iphone (do)? Phones internet usage? I currently own a mytouch 3g phone. I want to upgrade to a better smartphone without having to pay out the A$$. My friend told me to go on ebay and get an "unlocked" iphone. What does "unlocked" mean cell phone wise? I use T-Mobile currently, could an unlocked iphone be used with T-Mobile? How i get internet currently on my mytouch is that i connect to my home Wi-Fi router. Can the iphone do this as well? Or will i have to pay extra for internet use?
  • Under settings on my iPhone, does the data usage include Wi-Fi usage? Because its stating a ridiculous amount and I've had my data off… And my Wi-Fi on. Does the total of data include the amount of Internet I'm using when on Wi-Fi? I'm so confused
  • Save amount of Internet usage on iPhone? I just got a text from my cell network saying I've used over 75% of my data plan for the month already. I don't know how this is possible because I don't even use it for Internet as much as I could… What can I do to cut back the usage?