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Comment by bluedino | Hacker News Reader

>> a significant decrease in performance on the iPhone 6 up to 50%

Something's up. I updated my 6S yesterday and have noticed zero in performance changes or battery loss. Still plenty of bugs though, I was reading an email and the 'flag/file/trash/reply/new' bar totally went away. At least the touchscreen hasn't gone unresponsive, causing me to have to hit sleep/wake to toggle it back on. Maybe they finally fixed that.

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On an iPhone 6 - I actually gained performance from 11.2 to 11.2.2 (I neglected to run Geekbench on 11.2.1). Previously my best single-core score on iPhone 6 was 1536 (and only when battery was above 93% would I get in the 1500s), now today I got 1540 single core on only 66% battery - previously anything below about 70% battery would give me a score down in the 1200s.

There really seems to be some performance issues with either the network stack or the threading/background processing in iOS11 on older devices.

I've had periodic slowdowns and unresponsiveness with my iPhone 6 since upgrading to 11, but a few weeks ago I was downloading a bunch of music for a trip and my phone was virtually unusable until the downloads were done. Since then I've noticed unresponsiveness around the same time I see notifications for podcast updates or after exiting an app that was downloading tons of content (e.g. The Weather Channel app).

same behaivor here... no perfomance / battery hit.

6 or 6s?

I have a 6S+. I noticed a performance gain going from 11.2.1 to 11.2.2.

Before: 2384.

After: 2541.

6 and 6S have different CPUs.

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