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My battery is awful even after a complete wipe, will a manual reinstall with iTunes help?
 
So far I have had no problems on my i-Phone 7. The thing I'm most happy about is that the battery life is better. One typical days use drops the battery from 100% to 20%, now it's 100% to 50%. Battery Health is showing 86% and that matches very close to the iBackupBot value of 87%. The phone is 18 months old and has a cycle count of 361. Let's hope it continues to behave. ;-)
 
The original poster asked for specifics.

Apart from a general sense of smoothness and responsiveness after 11.3, I just found out it (along with macOS 10.13.4) fixed my iTunes photo sync problem. Since late last year, my photo sync for iOS devices have all gone corrupt, unable to complete the sync, leaving blank photo placeholders. Despite trying numerous erases, reinstalls etc, none helped for a Photos database of close to 40,000 photos. Sync would always die at around 7000 photos and would quit the sync routine. With iOS 11.3 (iTunes version unchanged), it took iTunes 2 days to re-compute the database and then sync transfer the photos. So happy!

There you go, a definitive improvement and bug fix from the earlier 11.x.x versions.
 
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My battery is awful even after a complete wipe, will a manual reinstall with iTunes help?

I have gone back to ios 11.2.6 on my iphone SE. Ios 11.3 kills the battery life in my opinion with nothing changes of performancr
 
My son upgraded his 6s to iOS 11.3. The result is 4.5 hours of usage max despite the battery being at 92% of its capacity. Battery drain is worse than ever.
 
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Wonderful battery life on my iPhone 7 with 11.3. Getting around 8 hours of usage time with usually about 24 hours of standby. That's with battery health at 89% and no low power mode. Sorry you all are having issues.
 
Wonderful battery life on my iPhone 7 with 11.3. Getting around 8 hours of usage time with usually about 24 hours of standby. That's with battery health at 89% and no low power mode. Sorry you all are having issues.
Congrats on the good battery life! Genuinely. The overall life has been decent for me, but not quite as good as it once was - battery health is good, too.

On a similar note, my battery stats never reset (aside from after device reboot/reset) with 11.3. This was true during the betas, and with the public release. After charging to 100%, the usage and standby continue to accumulate. So, I actually have no exact idea of how long my phone lasts. Don’t know if I care enough to do a restore though.
 
The original poster asked for specifics.

Apart from a general sense of smoothness and responsiveness after 11.3, I just found out it (along with macOS 10.13.4) fixed my iTunes photo sync problem. Since late last year, my photo sync for iOS devices have all gone corrupt, unable to complete the sync, leaving blank photo placeholders. Despite trying numerous erases, reinstalls etc, none helped for a Photos database of close to 40,000 photos. Sync would always die at around 7000 photos and would quit the sync routine. With iOS 11.3 (iTunes version unchanged), it took iTunes 2 days to re-compute the database and then sync transfer the photos. So happy!

There you go, a definitive improvement and bug fix from the earlier 11.x.x versions.
I’ve been experiencing this problem for months and am hopeful this will work for me too!
 
The original poster asked for specifics.

Apart from a general sense of smoothness and responsiveness after 11.3, I just found out it (along with macOS 10.13.4) fixed my iTunes photo sync problem. Since late last year, my photo sync for iOS devices have all gone corrupt, unable to complete the sync, leaving blank photo placeholders. Despite trying numerous erases, reinstalls etc, none helped for a Photos database of close to 40,000 photos. Sync would always die at around 7000 photos and would quit the sync routine. With iOS 11.3 (iTunes version unchanged), it took iTunes 2 days to re-compute the database and then sync transfer the photos. So happy!

There you go, a definitive improvement and bug fix from the earlier 11.x.x versions.
Didn't fix for me. Any advice here? I know of one work around that is just turning on icloud photo library on my iphone and then then turning it off after a few seconds. This somehow jumpstarts the sync and basically re-imports my entire photo library. Problem is, it has to be done all the time.
 
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My iPhone 5s is now stable and running very fast on iOS 11.3 like it was on 10.3.3.
Back when I had an iPhone 5s it didn't run too well on iOS 11.3. Guess it varies on battery use and just general use of the phone. :p
 
Back when I had an iPhone 5s it didn't run too well on iOS 11.3. Guess it varies on battery use and just general use of the phone. :p
I have two 5s’ bought around the same time (2013) that are my beta testers. They are now on 11.4b1. One 5s has non-linear discharge while use and has bad battery life, the other has a linear discharge pattern and better battery life. Such as it is for phones with 5 year old batteries running 5 operating operating systems versions later.
 
iOS 11.0-11.2 was rubbish on everything. Couldn't;t believe that the perfect Pro Motion display on my Pro 10.5 was ruined my the jittering and slowness of 11. 11.3 has made things a lot better for the Pro 10.5 and SE. It is still pretty bad on the A7 devices though.

My son upgraded his 6s to iOS 11.3. The result is 4.5 hours of usage max despite the battery being at 92% of its capacity. Battery drain is worse than ever.

Yes while performance has improved, battery drain is worse than before....
 
I agree , iOS 11.3 has been really smooth on my iPhone . No complaints , my iPad Pro 9.7 is also fast and fluid . It’s a pity that it took six months of horrible performance on earlier versions of iOS 11 to get here. When iOS 12 is launched I think I will wait for six months before jumping in
 
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It’s an improvement, but I hate how people go overboard and describe iOS as “silky smooth”. Every single update. No, it isn’t. There’s still stutters around the OS and when scrolling in apps like Apple’s own Music App, App Store, YouTube, Twitter, and various other apps. There’s still stutter when swiping left to widgets and scrolling through them. There’s a slight stutter and an annoying “blink” glitch when opening folders. I could go on but I will save my fingers from getting arthritis. I admit the performance has improved and it runs better than past iOS 11 versions, but the rock solid consistent 60 fps still isn’t there and hasn’t been since iOS 6. iOS 11 is merely performing as it should’ve on day one which sadly we get excited about.
 
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