Can't Cellular Disable Data on iPhone 6

[jedivulcan]

The iPhone 6 I'm using is still eating through wireless data even though I toggled the "Cellular Data" switch off. New phone, set up from scratch.

Steps I've taken:

Disabled Cellular Data
Disabled LTE Voice/Data preferences
Disabled iCloud
Disabled App Store auto updates
Disabled Individual Apps
Disabled Background Tasks
WiFi enabled
Latest version of iOS

The 2gb plan I have with AT&T has already run over. I checked the account and it's still pinging a server and downloading 20mb chunks of data whenever it wants.

What gives?

 

[wannabepcuser]

Is your phone jailbroken?

 

[jedivulcan]

Is your phone jailbroken?

It's not jailbroken.

 

[Applejuiced]

So you disable cellular data and it still uses carrier data?
That doesn't make sense.
Restore and setup as new.

 

[adamhenry]

Which app is using the data?

 

[jedivulcan]

Which app is using the data?

It looks like it's Tumblr. All of the apps were individually toggled off. The phone shouldn't sent/receive anyways because I turned the service off with the cellular data toggle.