I signed up with Sprint and bought a refurbished iphone 4s last month. This morning (Sunday) I noticed that the clock on my phone has not changed. It still has the old time. Is this a Sprint problem or an iphone problem? I do have it set for the correct time zone for where I am located. Is there some other setting that I haven't found that will make the 'spring forward' and 'fall back' time changes be automatic on my phone?
Try re-registering onto the network to see if the time corrects itself. First Powercycle the device, then go into the dialing screen and press ##UPDATE# then tap Call. Keep me updated.
Sprint Social Care