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From: Zaidy036 <Zaidy036@air.isp.spam>
Newsgroups: misc.phone.mobile.iphone
Subject: Re: Battery discharge when on but unconnected
Date: Sun, 10 Mar 2024 13:55:33 -0400
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On 3/5/2024 9:03 PM, bp@www.zefox.net wrote:
> What's a reasonable battery discharge rate for an iPhone 6
> that's powered on but in airplane mode with WiFi off?
> 
> I expected one or two percent per day, but it seems quite
> a bit faster. After two or three weeks it's ~50% and falls
> a percent every couple of minutes when used actively.
> 
> The battery is about six months old, replaced by a local shop.
> Maybe I got a dud? Is there a simple test?
> 
> Thanks for reading,
> 
> bob prohaska
> 

My question is why carry a cell phone with its power on in this 
condition? The only connection left is Bluetooth.

First turn off Bluetooth besides Airplane Mode.

Second go to Settings > General > Background App Refresh and shut off 
what you do not want running when ever the iPhone is powered on but off.

Then recheck battery usage over time before the drastic step of low 
power at all times.