Friends, greatfully assistance me figure this out:

 

I was out of nation from 7/15 to 8/16. I had incited off interpretation in motion whilst out of country. At times, I used to get giveaway wifi at airfield or at hotels. In my stream bill, I see a interpretation use of 318MB at 4:00 pm on 8/16, 2 hours after my moody landed.  I do not see any interpretation in motion charges as expected. I am extraordinary where which 318MB use came from. This is on iphone 3G.

 

My every day use in past months have been about 1-2MB per day. ATT repute attempted a lot to remonstrate me which may be wifi charges were billed at 3G interpretation use charges though I dont buy that. I do not do tethering. 

 

The reason I am extraordinary about this is if I pierce from total interpretation devise to singular interpretation devise ($15 one), and if something similar to this happens, I will be in trouble.

 

If we have any clues, greatfully advice.

 

thanks much.

Sid