Return to Answer

Other Stack Exchange users have already answered this question in posts elsewhere.

t0mm13b writes that, while displaying your carrier's shutdown animation:

• Android is safely shutting down vital parts of the runtime.
• The OS is also broadcasting intents to tell apps and services to gracefully close. These, in turn, flush their caches of all data and shared preferences, save what-nots to the sqlite database, et cetera.

In other words, apps and services are given a chance to do their cleanup systematically.

[Commands such as adb reboot] are harsher. They actually bypass the safety mechanisms for a graceful shutdown.

Elsewhere, Yury offers another explanation of what Android does during a graceful shutdown:

• It shuts down ActivityManager. I think shutting down ActivityManager means that all activities will pass necessary lifecycle and, thus, the states of activities will be stored. But I'm not sure. I did not check.
• Then, Android turns off the cellular radio interface.
• After that, it turns off Bluetooth.
• Finally, it tries to shut MountService down.

adb reboot is faster because it skips some or all of the above.

Other Stack Exchange users have already answered this question in posts elsewhere.

t0mm13b writes that, while displaying your carrier's shutdown animation:

• Android is safely shutting down vital parts of the runtime.
• The OS is also broadcasting intents to tell apps and services to gracefully close. These, in turn, flush their caches of all data and shared preferences, save what-nots to the sqlite database, et cetera.

In other words, apps and services are given a chance to do their cleanup systematically.

[Commands such as adb reboot] are harsher. They actually bypass the safety mechanisms for a graceful shutdown.

Elsewhere, Yury offers another explanation of what Android does during a graceful shutdown:

• It shuts down ActivityManager. I think shutting down ActivityManager means that all activities will pass necessary lifecycle and, thus, the states of activities will be stored. But I'm not sure. I did not check.
• Then, Android turns off the cellular radio interface.
• After that, it turns off Bluetooth.
• Finally, it tries to shut MountService down.

adb reboot is faster because it skips some or all of the above.

Other Stack Exchange users have already answered this question in posts elsewhere.

t0mm13b writes that, while displaying your carrier's shutdown animation:

• Android is safely shutting down vital parts of the runtime.
• The OS is also broadcasting intents to tell apps and services to gracefully close. These, in turn, flush their caches of all data and shared preferences, save what-nots to the sqlite database, et cetera.

In other words, apps and services are given a chance to do their cleanup systematically.

[Commands such as adb reboot] are harsher. They actually bypass the safety mechanisms for a graceful shutdown.

Elsewhere, Yury offers another explanation of what Android does during a graceful shutdown:

• It shuts down ActivityManager. I think shutting down ActivityManager means that all activities will pass necessary lifecycle and, thus, the states of activities will be stored. But I'm not sure. I did not check.
• Then, Android turns off the cellular radio interface.
• After that, it turns off Bluetooth.
• Finally, it tries to shut MountService down.

adb reboot is faster because it skips some or all of the above.

Other Stack Exchange users have already answered this question in posts elsewhere.

t0mm13b writes that, while displaying your carrier's shutdown animation:

• Android is safely shutting down vital parts of the runtime.
• The OS is also broadcasting intents to tell apps and services to gracefully close. These, in turn, flush their caches of all data and shared preferences, save what-nots to the sqlite database, et cetera.

In other words, apps and services are given a chance to do their cleanup systematically.

[Commands such as adb reboot] are harsher. They actually bypass the safety mechanisms for a graceful shutdown.

Elsewhere, Yury offers another explanation of what Android does during a graceful shutdown:

• It shuts down ActivityManager. I think shutting down ActivityManager means that all activities will pass necessary lifecycle and, thus, the states of activities will be stored. But I'm not sure. I did not check.
• Then, Android turns off the cellular radio interface.
• After that, it turns off Bluetooth.
• Finally, it tries to shut MountService down.

adb reboot is faster because it skips some or all of the above.

Other Stack Exchange users have already answered this question in posts elsewhere.

t0mm13b writes that, while displaying your carrier's shutdown animation:

• Android is safely shutting down vital parts of the runtime.
• The OS is also broadcasting intents to tell apps and services to gracefully close. These, in turn, flush their caches of all data and shared preferences, save what-nots to the sqlite database, et cetera.

In other words, apps and services are given a chance to do their cleanup systematically.

[Commands such as adb reboot] are harsher. They actually bypass the safety mechanisms for a graceful shutdown.

Elsewhere, Yury offers a different explanation of what Android does during a graceful shutdown.

Other Stack Exchange users have already answered this question in posts elsewhere.

t0mm13b writes that, while displaying your carrier's shutdown animation:

• Android is safely shutting down vital parts of the runtime.
• The OS is also broadcasting intents to tell apps and services to gracefully close. These, in turn, flush their caches of all data and shared preferences, save what-nots to the sqlite database, et cetera.

In other words, apps and services are given a chance to do their cleanup systematically.

[Commands such as adb reboot] are harsher. They actually bypass the safety mechanisms for a graceful shutdown.

Elsewhere, Yury offers another explanation of what Android does during a graceful shutdown:

• It shuts down ActivityManager. I think shutting down ActivityManager means that all activities will pass necessary lifecycle and, thus, the states of activities will be stored. But I'm not sure. I did not check.
• Then, Android turns off the cellular radio interface.
• After that, it turns off Bluetooth.
• Finally, it tries to shut MountService down.

adb reboot is faster because it skips some or all of the above.