Folks,
We have experience a number of emails disappearing from iOS devices and I am looking for confirmation on my thoughts as to why this is happening -
In every case the phone has been isolated for over 100 days and I think the file data protection key is lost thus rendering the email as 'lost'.
All emails fall under the 'protected Unless Open class for iOS security but I cant see if the file data protection key needs to be replaced or refreshed/ confirmed after a period of time.
Can anyone shine a light on my thoughts -)
What is the Mail Days to Sync period setting on the device?
Hello,
It was changed from 1 week to forever at the screening stage of the examination. I have never seen this emails but the client states that emails were viewed at seizure but when they again reviewed the emails 100 days later, they were not there.
I need a technical reason as to why this is and what I am trying to determine is what the iOS device is doing to these email when the device is off-line and I was wondering if it is to do with the protection key?
Can I ask what iOS version the iPhone is running? We've had a handset where emails have "vanished" but have been unable to recreate the scenario.
Hello,
We have seen this issue on iOS 9.x & 10.x. We know that there is a bug in iOS 9.x which meant that if am OTA update was carried out, emails would have no body (just header informaiton) - expeically for older emails that have not been viewed sine the iOS update.
We have also seen a scenerio where changing the state of the phone (i.e. turning off Wi-Fi, BT) removed or added emails to the totals etc.
I added emails to a test iPhone 5S and within an hour of isolating the network, the emails vanished - The iOS version in this example is 9.0.2
My team have seen email issues on verisons 9.3.2, 9.3.5, 10.2.1, 10.3.1 & 10.3.2.
My thinking is that as iOS devices are not interested in emails (as they are not included in backups) that it is to do with RFC protocols, but isolating this is proving difficult.