2GB data plan enough?

You're lucky! O2 here in the UK are only offering a 500Mb data limit on their standard mid-range tariff.

Unless you regularly stream video or visit high-graphic web pages via 3G, 2Gb (per month, presumably) should be plenty. Just be sure you do all the little things to stop you phone from burning up bytes unintentionally (set email push OFF, etc.)

I've had an iPhone for 3 years. I have Push email and use the internet-enabled apps pretty heavily. I have never used more than 200 MB in a month during those 3 years.

I do think O2 are being particularly stingy with their data cap and told them as much when I asked for my PAC to go to another operator. Orange are offering 750Mb and Vodaphone/Three are offering 1Gb.

I'm not a heavy user but I don't want it preying on my mind every time I use data on my iPhone, that was the whole point of all-you-can-eat on the old tariff =0)

I'm totally with you on that. Unless O2 can offer me a better deal on data, I'll be going elsewhere.

Like you, chances are that I won't use 500Mb+/ month, but I don't want to have to constantly monitor my usage just in case.

If you were upgrading you should have been offered the option to keep your unlimited plan. If you were not offered that option I would go back to AT&T and ask them for this. I kept mine because I have a wife and teenager that are addicted to the internet and texting.

I've been trying to get an answer on this in another thread.

I think a quick and dirty method is to go to Settings/General/Usage, then scroll down to check the Sent and Received figures under "Cellular Network Data". If you reset this at the start of each month, it should provide you with a ballpark figure on your usage (I think).

Worryingly, I reset mine (an iPhone 3G) about 5 hours ago, just to see what my usage would be with everything switched on (email on 15min push, WiFi and 3G networks activated) A quick check tells me that in that short time, my phone has sent 3Mb of data, and received 85Mb!!! And I haven't even gone near a web page!!

i have the mywireless att app. you can check usage( mins, texts, data) and pay your bill. Im not sure if carriers over seas have an app like that or not, but it works pretty well for me to monitor.

There is no data rollover.

there should be. but then, i cant complain. i still got the unlimited plan.

What are some ways to save using data unknowingly?
I know that using wifi, and turning email PUSH off is good. Any other ways?
I have the 2GB plan.

well not knowing where you're from you are but if you're in Canada on a Rogers carrier, i know there's an app a freind of mine showed me called "Rogers" something....i don't remeber the last part but it helps you manage your usage on text's, calls and data usage as well... like i said, do a search for Rogers ( Canada only ) on the apps and look around.... good luck 🙂

I just changed from unlimited to 2GB (to get tethering) on my 3GS. My average usage has been around 1GB, so I hope I will have enough for occasional tethering without paying extra.