even with 11.1 battery issue has not been solved yet. some of the issue from previous 11.01 - 11.03 is still the same.

hesitating on upgrading now.

alternatively i can restore the 10.3.3 image on the apple website but i am not sure if that will actually bricked the phone or no.. suppose i did not save my backup via icloud.

am using 7plus now. previously on 10.3.3 even with gaming and youtubing, battery almost last 2 days. since having 11.01, from full charge, morning can last until 6pm left 60% but depend on how you use your phone.

not sure about you all but on 10.3.3 i never restart my iphone even once. there after update makes me restart my phone due to hang (out of ram think) or it go restart by itself.. especially since 11.01.
the issue is not significant but yes you can feel the change there.. only thing about 11 is about the CC, that's all.

well yesterday, i had to restart my phone because playback from music have no sound. after restarting, sound is back. some times the sound toggle is not available when you toggle volume up and down.
as i say significant change is not much but to some of the things happen on IOS 11 is irritating enough.

anyone with ios 11.4 have any difficulty in fast charging? as in using 12w adapter and lightning cable. apart from that, i have some difficulty in LTE connectivity actually. signal shows LTE but the fact is, i can't even open safari.

i think the drain issue will continue in ios 12 too. was very skeptical on updating the ios nowadays. comparing to ios 10 vs 11 series, they actually throttling the phones performance and battery life. previous version of ios is not allowed too, they don't signed the previous versions anymore.