How much difference have you noticed after doing this?
Can’t say, just started. Based on web searches, I see there’s some speculation about whether this really matters, Apple says that turning off cellular data can reduce battery by keeping your phone from searching for towers in the background. Figured it can’t hurt at least!
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I have seen this make a huge difference for me when I’m in areas of low coverage but almost no difference when I have strong signal.
I was hiking for two days (using GPS) and ran one hike with cellular on and my battery was around 40% afterwards. The second day I turned off cellular and hadn’t dipped below 90% after a 4 hour hike.
YMMV of course. 
Also this isn’t apples to apples since I didn’t have WiFi. I was turning cellular on and off when outside with next to no signal.
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Yes! I’d like some kind of poor coverage mode that doesn’t try as hard to maintain a good connection unless it’s plugged in. It’d feel like a satphone, I guess.
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I’ve noticed a dip in iPad battery the last couple of days, but it’s too soon to know whether it’s related to the OS update or if I’ve just been doing updates and generally needing power a bit more. There have been a lot of app updates!
I’m a bit disappointed with the Reminders app updates. I can see Apple are heading in a good direction, but I don’t understand why they would implement an early reminders function without also implementing a postpone function (for recurring tasks). Of course, I have no need for early reminders and a desperate need for postponing, which may not reflect other users, but to me they are two sides of the same coin: moving alerts forwards, and moving alerts backwards. So to me, right now, Apple hasn’t fixed what I perceive to be the biggest weakness of Reminders. Unfortunately it is quite an annoying one which has made me disengage a lot with the app in recent months and I can’t see another solution to it right now.
(For fairness I will add that lots of apps don’t really handle postponing of recurring tasks very well. But at this stage all I want is a button that moves a task on today’s list to tomorrow without altering the underlying repeat.)
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I’m finding my iPhone 13 Pro Max battery is now consistently 15% less than it was on iOS 16 at the end of the day.
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I’m glad Fantastical can now have an actionable calendar widget, like they used to have. It’s a bit slow, but it works for now.
Two features in messages.
- The location request,. Where you can request a one time location from someone that shows up on apple maps. This is incredibly useful for picking up my teenage kids who refuse to permanently share their location, or meeting friends
- The check in feature where someone can track your journey on request.
Also backlinks in Apple notes.
Also airdrop by bumping another phone.
You can now change the haptic touch speed (in accessibility). The new fast setting feels better to me than 3D Touch, and way better than the default Haptic Touch speed.
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This might sound “mundane” but, so far, 17 seems to fix a lot of problems I was having with speech to text and AutoCorrect while typing!
Also somewhat easier to use text-selection “handles.”
I’m thrilled!
In my opinion, the AutoCorrect while typing was really getting awful. By that I mean a noticeable dip from the early days of iOS. It kept getting better until perhaps the last two versions of iOS.
I don’t think it’s just my opinion because I remember reading somewhere that it was getting so bad people thought they were experiencing cognitive decline or other brain issues!!
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