When the iPhone 5 was launched, there were a few minor glitches one of which was that when the iPhone 5 was connected to Wi-Fi, it still used cellular data. New A&T iPhone 5 owners and those who have updated to iOS 6 are seeing ghost data use, that they believe is a software problem
Verizon Wireless officially stated that no one would be charged for cellular data used while connected to Wi-Fi and suggested users update the software via an Apple fix.
AT&T iPhone 5 owners are seeing strange eerie midnight data usage that continues to spook them and their wireless bills. AT&T support forum is filled with stories like these:
"I contacted ATT support I was told that this type of data usage was normal when using Wi-Fi since the iPhone 5 was advanced and used data at all times, even when associated with Wi-Fi networks. The suggested fix was that I disable cellular data to avoid charges. This answer is unacceptable to me."
"My iPhone was sending large data segments of between 100mb and 400mb at times when the phone was on Wi-Fi. Another odd thing is that when I checked data usage on my phone in the settings/general/usage, it wouldn't show the data usage on there. I emailed ATT support and they said it's Apple's fault.
Phantom data usage has been noticed by iPhone owners with grandfathered unlimited data who are hitting their data limit earlier.. Users who formally typically used 2 GB of data and a month are now showing 4 GB of use it. Other 2GB average users are showing up to 5GB of data use.
- A fix maybe to turn off cellular data when you are using Wi-Fi.
- Turn off cellular data when the iPhone 5 is plugged into the charger. The iPhone charging goes into hibernation shuts off the Wi-Fi radio and switches back to cellular to reduce power consumption.
- Turn off cellular data whent the iPhone has black screen aka power save mode which turns off the Wi-Fi radio to save power.
Some contend it is a software issue. One customer on his bill found data being used at 12-1:00 am every morning on his iPhone 5 and his daughter's iPhone 4 with iOS 6. His phone used 426 MB's of data at 11:57 pm while he was asleep. AT&T iPhone 4S customers have seen data increases after upgrading to iOS 6.
There are also reports of data problems with iPads. Note the photo shows a Ghost iPhone Case from Amazon that sells for around $10.00