Unable to answer/reject calls

[eric.gallagher@roofingsou]

One of our users has the app installed on his device. Its the Samsung S9. When his device is in the locked position he can not interact with the options to answer or reject the call. He can however once the device in unlocked. I don't believe this is an issue with 3CX in itself. It sounds more like a UI issue but we have already un-installed then re-installed the application, restarted the device, and made sure everything was up to date. Has anyone run into a similar issue?