After removing my simcard, turning my phone on without it, then placing the simcard back in and turning on again, it reset the time & date.

I re-entered the correct settings, but now i look at the date and it is incorrect, i try to change this and select save but it does not save what i have entered.

I have attempted this with auto update on & off, with no luck.

Could someone please suggest why this is happening and hopefully a solution.

Many thanks.