Path: ...!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Jolly Roger <jollyroger@pobox.com>
Newsgroups: misc.phone.mobile.iphone
Subject: Re: Hot iPhone 13 lost a lot of battery power within 3.5 hrs.
Date: 4 Aug 2024 01:28:24 GMT
Organization: People for the Ethical Treatment of Pirates
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On 2024-08-04, *Hemidactylus* <ecphoric@allspamis.invalid> wrote:
> Alan <nuh-uh@nope.com> wrote:
>> On 2024-08-03 16:47, Ant wrote:
>>> Jolly Roger <jollyroger@pobox.com> wrote:
>>> 
>>>>>>>>>> Weird/Odd. Hot iPhone 13's iOS v17.6 (updated from iOS v17.5.1
>>>>>>>>>> yesterday) battery power percentage dived from recharged 88% to
>>>>>>>>>> 23% from 6 PM to 9:30 PM while out to eat dinner in a crowded
>>>>>>>>>> restaurant and commute to there and back home. Battery
>>>>>>>>>> statistics said it was hot to recharge at 88% max. Usage shows
>>>>>>>>>> "Find My" and weak cellular using half in the background for the
>>>>>>>>>> first hour, but after that was just "Find My".  Battery health
>>>>>>>>>> shows 89% which is normal for this iPhone from 2/1/2022.  What's
>>>>>>>>>> going on? Is this a new bug or something? :/
>>>>>>>> 
>>>>>>>>> Higher than normal battery drain is expected with a new version
>>>>>>>>> of ios as the caches and indexes get refreshed.
>>>>>>>> 
>>>>>>>>> Give it a day or so to settle down.
>>>>>>>> 
>>>>>>>> Is it supposed to run even when on battery only when not at home?
>>>>>>>> It would had been nice if it happened when connected to a power
>>>>>>>> charger at home. :(
>>>>>>> 
>>>>>>> It's normally not an issue and runs in the background. Occasionally
>>>>>>> it drains more than normal for whatever reason. You seem to have
>>>>>>> hit one of those occasions.
>>>>>>> 
>>>>>>> Actually, you also mentioned weak cellular signal which is very
>>>>>>> effective at draining battery power.
>>>>> 
>>>>>> Absolutely. When the cellular (or WiFi) signal is low, the device
>>>>>> boosts the radio power which naturally drains the battery faster.
>>>>>> Combine that with the normal post-installation indexing and cache
>>>>>> rebuilds, and you have a recipe for abnormally-high battery drain.
>>>>> 
>>>>> I wished there was a way to tell iOS not to the indexes and rebuilds.
>>> 
>>>> Not really, because you definitely want all of the benefits it provides.
>>>> It's been a normal part of system updates for decades. Refrain from
>>>> updating when you want peak performance. Simple.
>>> 
>>>>> I know using airplane mode for disabling cellular would work, but it
>>>>> was in the purse so...
>>> 
>>>> So, you couldn't take it out and turn cellular off? Not sure I follow
>>>> your logic.
>>> 
>>> I didn't know it was overheating and draininage battery in it until after
>>> getting home.
>> 
>> Are you seriously suggesting you've never seen one of the numerous times 
>> it's been mentioned that immediately after an iOS update there can be a 
>> surge in activity?
>> 
> The recent update didn’t impact my battery drainage much if at all.

Did you forget he admitted the wireless signal was weak as well?

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JR