I have a phone that has a ? mark where the date & time are located. Just blinking from the ? to date & time. Phone works OK. But computer is having some issues with getting on the Internet. Is it related? I just can't seem to find anything about the question mark anywhere.
Try resetting the phone to factory default and have it reload the firmware.
Also make sure you have the PC port enabled for PC use.
What are you running? CME, CCM6.x, 5.x, 4.x
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