Half the day was normal to you?! What are you guys doing with your phones, I use some cheap chinesium android and it gives me easy 2 days of battery if not more.

I get substantially better battery life on my iPhones than my Androids, although I've been pretty happy with the Note 8 so far. Reasonably happy with 7+, curious to see what happens w/ the X.

Your battery is probably degraded, and no software update will fix it. Lion batteries just don‘t last forever.

You can get a replacement battery for your phone for €25. If you don’t want to do the replacement yourself, any 3rd party repair shop will replace it in 15 minutes. You can also go to an authorized service provider, but that will cost €100 and take much more time.

Batteries do not degrade all at once right after a software update.

Half a day, while far from ideal, was long enough for my needs. However, as soon as I upgraded, and not a minute earlier, the battery problem manifested. Now, it could be a coincidence and it is indeed just a problem specific to the battery, but its at best suspicious - the timing is. I will replace the batter anyway, and I am getting a new iPhone next week, I just don’t appreciate being “forced” to upgrade -- conveniently when the iPhone X came out, no less.

If your battery only lasted half a day before, it was already a severely degraded battery. The update will put a lot of strain on the battery (iPhone does a lot of re-indexing and other stuff after the upgrade), which might might have caused the battery to deteriorate even more.

And, as I said, you are not forced to upgrade. A battery replacement is cheap and quick and will solve all your problems and your phone will feel like new.

I also have the iPhone 6S, and I've also been having trouble with the battery. I've had to replace it twice. (First time Apple replaced the whole phone because of a manufacturing defect, second time I went to a 3rd party repair shop)

Sure, it would be nice if Apple products lasted forever without service. Unfortunately they don't. But servicing iPhones has become extremely cheap and extremely quick -- as long as you stay away from authorised service providers.

I am not concerned with the replacement costs -- it's just where I live, getting the battery replacement will likely mean that I have to ship it to another city(Athens), or, maybe, find some place in a different city in the island (Crete) who may be able to do it. Its a hassle and an inconvenience for me.

What is odd is that is seems to be related to rendering; sometimes when I scroll on either direction on Tweetbot or on Safari, the iPhone will stall for maybe 500ms and the battery will drop by 20% or so instantly. Other times, I will app-switch to Slack and it will do the same. Reading content in black background/white text on the other hand, doesn't seem to be draining the battery. So I think its safe to assume this is an upgrade related problem. Also, I have disabled spotlight indexing and pretty much everything else I could, and it's also been quite some time since the upgrade for any upgrade tasks to be running to completion still.

I had the stalls as well, and they went away after replacing the battery.

I’m pretty sure that there is no way to fix your phone with software. It’s a hardware problem. Just replace the battery, and it’ll work fine again.

I don’t know where you live in Crete, but typing “iphone repair cityname” in google should quickly get you to a place that can replace your battery in 15min.

>Right after the upgrade, batter would last for maybe 1 hour, tops, 30 minutes on average

What are you doing on your phone for that type of battery life? My phone (iPhone 6 Plus) has definitely been slower, but my battery life seems to be the same post upgrade. My phone is mostly idle throughout the day.

On iPhone 7 Plus and iPad Pro battery was awful for me until I did a totally clean install and manually added back apps. Massive bore but fixed battery problems.

I tried that to no avail. Reset and install, no change whatsoever

My 6 had it's battery life destroyed under standard usage.

Which version are you on now ?

There were definite performance and battery life issues with 11.0 most of which were fixed with 11.1 and improvements are coming as well with 11.2. For me personally it's on par with iOS 10 for battery life.

Same here with an iPhone 7. I am permanently in low power mode and even then I barely make it through the day - and I am hardly using the phone. It is ridiculous.

Replace your battery.