Prisoner of Wrong Automatic Time, Please Help!

A

AC Question

Hello there,

The device is ZTE - N861
The operating system is Android 4.0 (Ice Cream Sandwich)

The time on the phone is one hour behind the actual time, and when I try to change the time under Settings>Date & Time, I see that the option for "Automatic date & time" is chosen but also inactive/shaded/untouchable. I cannot choose or click on it.

I cannot disable the automatic date and time. Could you please help?

Thank you in advance.