Path: news.eternal-september.org!eternal-september.org!feeder3.eternal-september.org!panix!usenet.blueworldhosting.com!diablo1.usenet.blueworldhosting.com!nnrp.usenet.blueworldhosting.com!.POSTED!not-for-mail From: Marion Newsgroups: comp.mobile.android Subject: Re: Shutdown vs. Restart Date: Sat, 22 Mar 2025 19:07:02 -0000 (UTC) Organization: BWH Usenet Archive (https://usenet.blueworldhosting.com) Message-ID: References: <0aottjlp05kk73mqs5utee75nsognfpf8j@4ax.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Sat, 22 Mar 2025 19:07:02 -0000 (UTC) Injection-Info: nnrp.usenet.blueworldhosting.com; logging-data="85509"; mail-complaints-to="usenet@blueworldhosting.com" User-Agent: tin/1.6.2-20030910 ("Pabbay") (UNIX) (CYGWIN_NT-10.0-WOW/2.8.0(0.309/5/3) (i686)) Hamster/2.0.2.2 Cancel-Lock: sha1:9EW0Uc0DyO6m1Ee3IjYg3aZdO8E= sha256:5LKbQd3GHV6Zd7e2XIHJWYuFlKAvkNoXoUYUPCHOJn8= sha1:6IMVaSmsHyix4PnjaIgMEvjccmQ= sha256:kCcGscUlScQJj0fmLHZ47YW3UD1Z5dHLQI43vZAsJUQ= On Sat, 22 Mar 2025 13:41:40 -0400, Newyana2 wrote : > There is a disturbing new version of Sleep Always striving to add technical value since I'm a purposefully helpful guy, Newyana2 is correct. For modern Androids, there can be sleep states... a. Standby The screen is off and some background processes are suspended. b. Doze Which has different levels depending on the hardware. c. Hibernate Which saves the current state to storage. AFAIK, in the context of Android, and in the context of the next level... 1. Poweroff closes apps & processes & clears RAM. 2. Restart closes apps & processes & clears RAM. 3. And there are a few states in between those two. A key difference is the bootloader is intimately involved in the poweroff:startup, whereas the bootloader "may" not be involved in the typical restart process. Moreover, "bootloader mode" is in between. AFAIK, there are also low-power data-collection hubs in modern Androids which are actually processors that are independent of the main SoC which collect data from sensors (accelerometer, gyroscope, magnetometer, etc.). Note that "trackers" take advantage of some of those low-power states. For example, in an iPhone, the tracking happens even when the user "thinks" he has fully turned off his phone (but the battery is still inside it). > I've heard that some cellphones can no longer be turned off > or "powered off". In the context of the next level, there exists a reduced-power state called the "battery saver mode" which is the "appearance" of being turned off, when it's not really off. In fact, some hardware is always powered, AFAIK, given all Androids (AFAIK) can charge even when the phone appears to be powered off and some have always-on sensors (like accelerometers) which operate in very low-power states (as likely do real-time clocks which keep track of time even when the main OS is off). As I alluded to, there's an in-between "bootloader mode" or "fastboot mode" (which is actually a communication protocol) which is a distinct state from the reboot/restart modes as it provides low-level access to the firmware.