The Russian company ElcomSoft has found that the Corporation keeps on the server information about the calls iPhone for 4 months, but does this does not prevent.
It Turned out that the company receives the call log, even if the device is switched off function for data backup in iCloud.
"Sync call logs takes place almost in real time, but sometimes they are sent and after a few hours. And there is no way to turn off this sync unless you disable iCloud Drive completely. In this case, many applications will stop working or will completely lose the ability to sync with iCloud", – commented on feature of the OS Vladimir katalov, ElcomSoft CEO.
In addition to the call log, iCloud received call history FaceTime. Thus, Apple collects information about incoming, outgoing, missed and rejected calls iOS 9 and later.