Over the past several weeks we’ve received reports from several Android Call Control users that they have been experiencing an issue where their contacts were disappearing from the native Android contacts and would reappear only after users rebooted their device. Once Call Control was disable or removed from their device, the problem subsided, which definitely indicated a problem with Call Control interfering with the contacts functionality on certain Android devices.
While we have been unable to reproduce this exact issue in our lab, we have released an update to Google Play today (version 3.1.7) that our test users (a big thank you to these folks for testing for us) have indicated has fixed the problem. We encourage all Call Control users to update Call Control via Google Play.
To summarize, Call Control accesses your contacts in a read only fashion to provide the ability to automatically white list incoming calls from your contacts / address book. Call Control does not write data to your contacts nor does it alter the data in any way.
We believe the issue surrounds the interval at which Call Control reads the contacts in order to synchronize Call Control with your contacts and a potential interference with other apps installed on devices that do the same thing (e.g. Facebook, messaging apps, etc.). What we think is happening is that too many apps are attempting to synchronize contacts at the same time which is causing the native Android contacts app to fail and causing users contacts to disappear. When the phone is rebooted the contacts then reappear, showing that they weren’t deleted but rather were just inaccessible.
We’ve decreased the interval that Call Control checks for updates to contacts which seems to have solved the problem. We will continue to monitor this issue, please email our support team at firstname.lastname@example.org if you believe you are still experiencing this issue after updating to version 3.1.7.
We apologize to our users who have experienced any frustration relating to this issue and appreciate your help and patience while we investigated and worked on solving the problem. We are committed to supporting Call Control and making it the best, most feature rich privacy and call blocking application available.