Will your smartphone's alarm turn ON even if the phone is turned OFF

I'm not sure if the alarm will sound if my iPhone is powered off as I normally leave my phone on at night but set the do not disturb feature to come on at night.

I know the alarm clock will sound if the phone is in do not disturb mode or is set to silent.

The old Nokia phones I had would switch on, sound the alarm then turn off once the alarm had been dismissed.

I think on most modern smartphones the alarm will not sound if the phone is powered off as the operating system is shut down.

 

On a standard Android, iOS, or even a Windows phone, you'd need the phone on for the alarm to work, as the alarm is just a program running on the device.

 

I don't even have a smartphone, I have a Nokia "brick" and the alarm turns the phone on automatically. Therefore, I'd assume that a smartphone would have the same capability.

 

Sounds like bull to me too. Perhaps your friend had their phone in sleep mode, not powered off.

 

They used to work like that since the alarm ran off the internal clock, but these days it's an application of the OS and therefore won't run when the OS is not active.

 

yes my samsung corby and almost all old non-android samsung phones had that in them my samsung phone used to turn off after the battery is dead but then when the alarm time kicks in the screen lights up with the ringtone but the system isn't fully booted,some Desktop PCs like mine has also an alarm o'clock in the bios battery that will turn on the pc in a specific time or something maybe it kind of work the same way,old phones had some magical stuff we might never have these days as everything in our android phones are apps from the task bar to the home screen nothing is built in the system or connected with the hardware....

 

Everything is connected to the hardware, that's kind of how electronics work.... Modern phones still have BIOS batteries, if they didn't, they'd be unable to track time when turned off. It's just that booting up the phone is a more complex procedure than it used to be; the phone can't boot up in a second, sound the alarm and then turn off again in a second. There's just too much stuff going on.