Optimised battery charging - not working?

Hmmmm - my old 6S is working fine most nights with this.

My XS Max didn't work at first, then it worked about 80% of nights for a month or two, but since last week it's stopped again.

All the options about location etc mentioned above are on.

I tried various experiments, like closing all apps before putting on charge, and even rebooting the phone before going to bed each night, but I haven't been able to find any pattern to why it works sometimes and other times not.

I would say that the XS Max has a lot more apps on it than the 6S, and I would hazard that there is some app or combination of apps that is interfering with this capability, but it would be very time consuming to try to figure out which one(s)

Mine has worked most nights since i got it working a couple weeks ago. The time it gets to 100% has varied each night. A few nights where it didn’t work was when I had plugged my phone in and it had a fairly high battery percentage than normal. The other night it said my phone will charge up by 4:30 am but i used my phone for a few mins when I woke up in the middle of the Night and it charged up to 100% shortly after.

done a tonne of testing and found that it literally works if you charge your phone around the same time each night, charging randomly during the day will throw it off as it’s machine learning, it’s not like teaching a living thing. mines been working for weeks, because at 11PM (ish) i put my phone on my charging pad. so long as it’s within the hour that you normally charge it, it should work. taking it off charge too early will also throw it off. As far as i can tell, location doesn’t affect it, but i don’t travel much so i don’t know for sure. if your routine changes, then it has to re-learn, but it should only take a few days. the feature is designed for people with solid sleeping patterns, but if you just put your phone on charge at the same time each night, going to sleep or not, it should work

Didnt mean to reply to user listed, but whatever. Personally, my schedule is wonky so not expecting it to work for my SE under the current limitations. But WHY is the feature based solely upon “machine learning” and completely inaccessible by the human who paid for the phone and expects it to work?! Another post mentions making the parameters of this feature user defined. The much needed feature should have started out that way - user set, just like we set alarms, bedtime, Dnd, events, reminders, notifications, and OMG, so many notifications! I dont want another possibly close to almost accurate notification based on the “machine learning” observation of temporary, mutable characteristics of my battery’s charging! I want to SET the charging pace and be able to change the schedule and check the graph to verify adherence to my prescribed changes to charging behaviour ... let Apple experiment w AI machine learning somewhere trivial. Leave our weak-sauce batteries alone! You’ve done enough harm!

fwiw.... I have never had a problem w battery life in my phones since the 4s (have had 3 now 4 for a short time in total; still have them all and batteries still fine). Never have I experienced reduced batt performance or life (except in extreme cold or extreme heat), though the 6s my relative just gave me has had battery failure and drains in an hour if using. Neither phone’s batt opt feature works, by the way. I don’t live on social media, gaming, or streaming video content. I take / edit photos a lot, i write long texts, stream spotify music, and leave it plugged in more than not, quite often. I always have my screen brightness lower than most, and i leave it in dark mode and night shift 24/7 (unless dealing w photos...if i remember). I always close my browser pages and apps when im done w them. I noticed a lot of ppl dont do that last thing who have batt problems.

I think Apple simply has released a very weak feature that will hopefully be more fully developed quickly since they are not delivering on related promises of hardware and software power efficiency (IOS 13 supposed to be less power draining, more efficient with batt consumption...lmfao).

first off, try not to sound so entitled next time. second off, I agree, there should be a way of setting it yourself, but Apple are pushing for a fully automated future where your phone does everything for you. Third off, the SE is very old and is the oldest iPhone to be using iOS 13, many features won’t work as well on it as they do on newer devices. I go to bed at or around 11PM or 12AM everyday, and my optimised battery charging works. I wake up inconsistently, at around 8AM to 10AM, and it still works. I also want to point out that if you’re using the SE, new software is going to kill the battery. If you have an older iPhone, when updating, it’s better to back your phone up, factory reset it, then install the latest software, because otherwise you’re just stacking the new software on top of the old. iOS 13 has proven to be far less battery draining for me and everyone I know who uses iPhone, and the charging optimisation feature works for most people. If your sleeping pattern or charging patterns are irregular, just turn the feature off. It’s designed to prolong your battery life, but if you’re using an SE, there’s little point in trying to save it when it’s going to become obsolete in a few months. I know it’s not as simple as buying a new iPhone, they’re not cheap, but if you’re going to use an older model, get used to things not working so smoothly

I also would like to have the ability to control this in another way and more manually.

I suspect that Apple made it the #1 priority here that under no circumstances should people end up picking up their phone intending for it to be fully charged, and it's only on 80%.

Therefore they have erred on the side of "fail safe" - if there is any doubt whatsoever about the situation, charge immediately to 100%.

Their reasoning will probably be that they will get a lot less complaints of the kind on this thread from most users, than they will get if users are finding that their phone is not fully charged when they expected it to be.

I also have tried for months to get it to work for me. Even tried turning it off and on again to try and reset it never works no matter what I do. I’ve been trying since I got my iPhone 11 Pro Max. No success please help?

this features works for me now now, I to had grow frustrated with this feature never worked for me at all since it’s launch. about a month ago I reported it and spoke to someone. I had to upload 2 lots of information from the phone 1 of the phone itself and 1 of the battery so the engineers could look at the data. The chap I spoke to acknowledge all the settings was correct on the phone and really wanted to know about my routine with how I charged the phone. The next night I get a message on the phone telling me battery optimisation was on and has worked every night for me. I’m not sure if the uploads have done something to enable this but the above might work for you.

As I've previously mentioned a few times on this thread, my old Iphone 6S seems to work pretty consistently almost every night with this functionality.

The newer Iphone XS Max is much more sporadic - it seems to work for a few days or a week or two, but then it stops doing it - usually once it stops, it stops for several nights in a row.

My theories are either that there is an app or apps on the newer phone that's somehow interfering with it, or, another possibility is that the programming is slightly different per phone model and battery. It seems to me that the XS Max stops using optimised charging if it thinks I've changed routine even slightly - took a lie in at the weekend, went away for one night to a place I've never been before, moved around to known places but at different times than usual - that sort of thing. I do wonder if there is some code that triggers the phone to think you have somehow changed your routine, and once that kicks in, it starts "re-learning".

I hear ya same here I just gave up on it. I love technology and new things it intrigues me but this on definitely is frustrating. Think I’ll wait till the software gets better to worry about it. Thanks for the response!

My XS Max only started working after enabling the location service settings described earlier in this thread, and then i had to patiently wait (i believe) about 7 or 8 day's for it to learn significant locations. I have noticed that it is very sensitive to when you re-charge within about an hour. So if you normally charge at 10pm, and place in on charge at 10:45pm, it probably won't work. Likewise if you put it on too early. In addition if you charge at any point outside what it thinks is your normal routine, it simply charges to 100%. It is a bit fussy, but i think the thought here is it's better to pull you phone off charge and have it be 100% than to pull it off and it's only at 80%. It seems Apple has erred on the side of caution with this feature to avoid all of the complaints they'd receive from people that the phone isn't charging to 100%. If you have all of the settings enabled and it's still not working, try clearing your Significant locations in system services, and it will re-learn - takes about 7 days.

Mine was working finally; sometimes wouldn't work for a few days then would kick in again. Update: During the last 3 months of this quarantine, it has not worked at all. I have kept to a very regular sleep/wake schedule & while I guess it had to recalibrate itself maybe due to location mostly in one place, it has not worked at all. Not sure if anyone else is finding this? The only thing I can think of (and yes, I've toggled on/off for a day, etc.) is that working from home & constantly using, and thus recharging the phone during the day a few times, has kept it from working. Anyone else?

I do get up & go to bed on a schedule. As far as not charging during the day, that's pretty impossible as I'm working from home & don't have a regular home phone to use. I just started charging it to almost 100% before bed instead of leaving it plugged in all night without that feature working. Hopefully when this is over (will it ever be!!??), it'll kick in again. Thanks for the response.

I’ve only seen it once, but then I’m not awake when it usually reaches 80%. But, it has regularly performed optimized charging for each night over the past month or so. I know it won’t work if you also charge the phone for a while during the day. I think it has to occur over one, regular complete charge.

My wife charges her phone more than once per day and cannot get optimized charging, because phone cannot “learn” her inconsistent pattern. I charge once each 24 hour period from 9:00pm until 6:45AM, and optimized charging works for me.