Recently I went to Italy and bought a pre-paid TIM chip to use while there, because it was much cheaper than the ridiculously high prices of Rogers' roaming.
However, something quite puzzling happened. Whenever I changed batteries (I don't recharge my phone, I change battery to a full one and put the other one to recharge on an external charger) I would lose my date/time, it would reset to 1/Jan/2000. Manually setting it worked, but it was a bit annoying.
I didn't understand why the "Automatic (Use network-provided values)" setting didn't work. I was assuming that the phone would use NTP, and once being able to resolve DNS it should adjust the date/time, but it never did.
Doing some googling I found about NITZ, which apparently Rogers uses but Italian's TIM doesn't. My questions are:
- is this the reason why automatic updates didn't work?
- is there a way of changing these configurations? (use NTP instead of NITZ for example, or some other configuration that would make the automatic update work, other than installing an app)