If you are reading this, you probably faced a situation similar to mine. You noticed that you were reaching your data limit on your cell phone plan with AT&T and you wanted a way to disable the feature that is causing your data plan to be used on your iPhone.
When you went to Settings > General > Network, you found 2 On/Off switches for 3G and Cellular data. You don’t know which one to disable and what the impact of disabling either will be. Short answer, by simply disabling Cellular Data you will not use anymore of your data plan. You can leave 3G on or off, that is optional. For more info, continue reading, otherwise, GO TURN IT OFF NOW, until your next data usage cycles renews. =)
Okay, if you are interested in knowing a little more or where I received my information, here it is. 3G is a supplemental technology that enables you to talk and surf the web at the same time. It enables faster loading of pages, mail messages, etcetera. So, if you were to disable 3G alone, you are still able to use up your cell phone data. 3G only makes things faster for you.
You are probably wondering: “Will text messaging still work if I disable my Cellular Data?”
The answer is “YES”. They will. In fact, I just finished checking that before I completed this sentence.
If you are the untrusting type, then your next thought may be “How do you know all this?” I got off the phone not more than 5 minutes ago with an AT&T rep and asked the exact same questions.