How does tech keep time when shut off?


How can my phone with no cell service or wifi be shut off and turned back on to tell the correct time and date? Does my phone use battery while “dead” to keep some functions running?

In: Technology

5 Answers

Anonymous 0 Comments

Generally there will be a special little battery on your main board to do that, at least that’s what a computer does. On your phone, if you unplug your main battery, and then turn it on (without WiFi or Cellular so it can’t get the time from the internet) will it have the correct time? If so, it has a clock battery. If not, it’s just using your regular battery.

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