Probably just have a setting adjusted wrong somewhere, but I can't find it anywhere. If I'm on the line, the phone used to have a screen time-out, and it worked fine. Now, it stays on, and if I try and manually locking the phone, it ends the call. I tried adjusting the battery and data modes, screen timeout & bright, and am running out of places to look. Any ideas what else I can check? Cheers!