unlocked/jailbroken iphone on at&t - any issues or problems?

[daonei]

I am a new customer to AT&T and purchased a free phone a few days ago. I then picked up a used iPhone, unlocked and jailbreaked it, and then swapped the SIM card and have so far been using it successfully. I basically don't want to pay the $20 data plan per month because I am around a wifi area most of the time.

However, when I log on to my account online, it states that my device is the iPhone. I changed it once to show my free phone, but it reverted back to the iPhone when I logged back on to my account.

Do you all know whether this will be an issue? Is anyone out there in my shoes, and have you ever had issues? I heard something about snooper and how it can detect your device and stuff like that so got a little worried.

Please let me know if you have any thoughts, comments, or advice! Thank you so much!