Ios 15.1 battery drain

I want to be clear from my last post earlier tonight that at no time did I have to put the iPad mini 6 into low power mode yesterday with the above battery life testing. And I did my standby battery drain test for the first 12 hours off the charger without picking it up to use other than look at the battery level. I did not start to use apps on the iPad until after the 12 hours in standby, whereupon it had dropped to 97-98% (3PM).

Also, I did not have the iPhone in low power mode until it dropped to 80% by 3 PM (over a 5 hour period). iPhone has been in low power mode since 3PM - it's 1:44 AM and I'm about to go to bed with it at 48% charge, which is a 4% drop in 3 hours with only 20 minutes of "screen on". Since 7PM the "screen off" use is 0 minutes.

I have not had any apps open in the background on the iPad, because everything was force quit before I went to bed and took it off the charger. However I have 27 apps open in the background on the iPhone, including settings, Kindle, notes, speed test, ring doorbell, messages, camera, fuzzy's taco shop, phone, mail, Safari, Reddit, fitness, App Store, Amazon, Snapchat, photos, Apple Watch, wallet, audible, clock, bank, contacts, Twitter, messenger, calendar, Visa.

This upgrade not only has rendered my phone useless but Apple has stopped signing older IOS so I can't even downgrade to an older version of IOS. This is totally unacceptable, this needs to be rectified so at the very least we can downgrade until Apple comes up with a solution.

I'm 76 and it's my daughters old 6S, I already have a Mophie battery pack on the phone and with the limited use I have for the phone I would normally not have to use the Mophie only plug it in at night. The average use would be around 40 to 60% when I plugged it in at night. I posted again with the results of the battery test.

garyfromkeswick wrote: "...it's my daughters old 6S, I already have a Mophie battery pack on the phone..."

Gary ~ It sounds like that iPhone 6s still has its original 6 year-old battery. ...If that's the case, by now the battery is certainly weak with age & use – which is normal. The long process of applying an iOS update can strain a weak, aging battery and be the proverbial "straw that broke the camel's back". Have the battery replaced and you also won't then need the Mophie battery pack...

iPhone Battery & Power Repair

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No the battery was replaced by apple when my daughter gave it to me which was 2 yrs ago. The Mophie was on it before she had it replaced so she just put it back on as a backup. I rarely ever had to use it, the odd time on the golf course if it was a long round and even then I would turn it on at around 40%.

Me too, mu friends also

Yep. A significant drop of battery life since the 15.1 update (12 Pro)

Same here, iPhone 13 Pro Max iOS 15.1

same here. 12 mini. upgraded to 15.1. battery level drop from 60% to 20% in 3 hours even when barely using. any solution to this? can I revert to previous iOS in a meanwhile?

Definitely a dramatic battery drain issue after the update.

I'm also experiencing a lot worse battery life after the recent updates. Has anyone tried to do a full reset of their device? If yes, did it help?

Hopefully someone from Apple is looking around and working on fixing the problem. Or maybe they also face it, frustrate their problem and are put to work.

I also detailed the situation to Apple in their form, I even sent them a link to this page of the forum. Maybe they will come back with an update in the coming days to fix this problem.