eli5 how can phones be set to turn themselves on at a certain time if they’re off ?

Question

eli5 how can phones be set to turn themselves on at a certain time if they’re off ?

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Answer 1

Most modern electronic devices don’t really turn all the way off unless you completely disconnect the power. Instead they’ll switch into a standby mode where basically everything is turned off except a clock that will trigger the rest of the computer to start back up.