Why dates and time disappear from sms

Hi,

when you receive a text or send one, you can see the date and time of when you receive or send it.

Now I have the problem when I shut down my phone and turn it on after, the date and time disappear.

What's weirder is that it doesn't do that for the recently text, only the old one.

How can I resolve that?

What device do you currently have? why do you need to turn the device off on a regular basis? the time stamp could just be a temporary feature of your SMS app - so every time you turn the phone off it removes the time stamp.