Frist, the relevant versions: Yealink T38 (188.8.131.52) with EXP38 sidecar 3CX (11.0.27011.711) on Win2k8 R2/IIS fully patched I cannot get the display to turn off after 1 minute no matter I do. The 3CX configs, phone configs and even phone LCD itself all show the proper setting but it’s not working. I have attached 3 screenshots to show this. I have done a factory reset and re-provisioned the phone with no success. I also manually set and then unset the setting in the phone’s HTTP interface with no success. I have restarted 3CX/server. I have a few other T38s and one with the attached sidecar as well that do not have this problem. Any ideas?