Path: ...!weretis.net!feeder9.news.weretis.net!feeder8.news.weretis.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: =?UTF-8?Q?J=C3=B6rg_Lorenz?= Newsgroups: comp.mobile.android Subject: Re: is my phone ON or is it OFF? Date: Thu, 2 May 2024 16:45:39 +0200 Organization: Camembert Normand au Lait Cru Lines: 71 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Thu, 02 May 2024 16:45:41 +0200 (CEST) Injection-Info: dont-email.me; posting-host="5ae252cd1e62a714ccc6b0c052edd96e"; logging-data="4108508"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18T55zY5PjYZxqgtmT+hCXEAWTDooSQnHU=" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:115.0) Gecko/20100101 Betterbird/115.10.0 Cancel-Lock: sha1:O504tiMwT2n5tIXw5L2vJeKLiqw= Content-Language: de-CH, en-GB In-Reply-To: Bytes: 4173 On 02.05.24 13:43, bad💽sector wrote: > On 5/2/24 02:17, Carlos E.R. wrote: >> On 2024-04-27 11:16, Theo wrote: >>> Jörg Lorenz wrote: >>>> On 25.04.24 15:55, Frank Slootweg wrote: >>>>> Jeff Layman wrote: >>>>> [...] >>>>> >>>>>> The charging circuitry is within the battery itself. It controls the >>>>>> rate of charge and, in particular, monitors the temperature of the >>>>>> cell(s). If it gets too high it will stop the charging. Note though, >>>>>> that the connection from the phone's charger socket (lightning, >>>>>> USB, or >>>>>> whatever) goes through some of the phone's circuitry, so the phone >>>>>> knows >>>>>> the state of charge of its battery. That way its % charge can be >>>>>> displayed on the phone's screen, and battery-usage apps can let you >>>>>> know >>>>>> what's being used and how long the phone might last before >>>>>> recharging is >>>>>> essential. >>>>> >>>>>    The fact that the phone is charging and how full its battery is, is >>>>> also displayed/displayable when the phone is switched 'off'. >>>>> >>>>>    Ergo, the phone is never really off. It's either awake or sleeping >>>>> during normal use or in cold standby when the user switched it 'off'. >>>> >>>> Bullshit! >>>> The OS is not booted when the Android is turned off. >>> >>> AIUI it is, kind of.  When you plug in the charger with the phone off, >>> the >>> phone starts.  The bootloader then launches the Android kernel with >>> the flag >>> androidboot.mode=charger >>> >>> Instead of doing the full Android boot, that causes the kernel to >>> launch a >>> charger UI application that shows your battery percentage on the >>> screen or >>> an animation (which comes from files on your OS partition).  The >>> charger app >>> doesn't allow you to otherwise interact with the phone and other services >>> like the radios aren't running, but the SoC is booted and running >>> software. >>> The SoC is also doing standard power management, ie the charging process >>> here likely looks very similar to charging when the phone is turned on >>> (because it is, in essence). >>> >>> The full OS services are not running, but the Android kernel and the >>> charger >>> app is. >>> >>> Theo >>> (usual caveats: my understanding may be out of date, different vendors >>> may >>> do their own thing, etc) >> >> >> Hum!  That's the best explanation I have seen so far. Thank you. It >> explains things. > > > Like your compuer, it's sleeping with one ear (and maybe eye) open. Are you trying to spread FUD again? -- "Alea iacta est." (Julius Caesar)