We've jailbroken the device and performed a tcpdump capture of the 3G packets (while the device is sitting idle).
The traffic appears to be a semi-constant HTTPS connection to an Apple run server:
Primary name: p02-quota.icloud.com.akadns.net
Within about 20 seconds of connecting the iCloud account, the HTTPS connection is opened and the seemingly sustained data connection begins (1 kbyte/sec).
Doing a MITM capture of what's actually going back and forth probably wouldn't help us at this point. It's just enough to know that it is indeed iCloud causing this data drain.
We've jailbroken the device and performed a tcpdump capture of the 3G packets (while the device is sitting idle).
The traffic appears to be a semi-constant HTTPS connection to an Apple run server:
Primary name: p02-quota.icloud.com.akadns.net
Within about 20 seconds of connecting the iCloud account, the HTTPS connection is opened and the seemingly sustained data connection begins (1 kbyte/sec).
Doing a MITM capture of what's actually going back and forth probably wouldn't help us at this point. It's just enough to know that it is indeed iCloud causing this data drain.