Like many other iPhone 6 owners, I have been struggling with the phone since updating to iOS11. Anyways, I just changed my battery and I have some before and after benchmarks for comparison.
Original Battery (62% health)
New Battery (98% Health - although I expect this to go up after the first couple of charges)
Geekbench4 Results Before
Geekbench4 Results After
As you can see, the battery makes a huge difference on benchmarks. Feel wise, the difference is even more pronounced. Apps that used to take 5 seconds to load take only 1 or 2 seconds. The camera app is faster. Screenshots are faster. It's totally worth swapping the battery for. I can probably go one more year before upgrading to the iPhoneX S2.
I will say that iOS10 is still much faster than my newly renovated iOS11 device. I accept that the 1GB of RAM is limiting and that I should expect some slowdown. But I needed wOS4, so I had to update. The battery swap at least makes the iOS11 experience bearable.
ft
Original Battery (62% health)
![Screen Shot 2017-12-31 at 9.52.52 AM.png Screen Shot 2017-12-31 at 9.52.52 AM.png](https://forums.macrumors.com/data/attachments/659/659709-9a77ae784af9b528b3e39070121368ca.jpg)
New Battery (98% Health - although I expect this to go up after the first couple of charges)
![Screen Shot 2017-12-31 at 10.50.21 AM.png Screen Shot 2017-12-31 at 10.50.21 AM.png](https://forums.macrumors.com/data/attachments/659/659710-4c08932fddf8b23002693151853952de.jpg)
Geekbench4 Results Before
![IMG_0718.PNG IMG_0718.PNG](https://forums.macrumors.com/data/attachments/659/659711-e9986444e3352da34a22e53ef520f274.jpg)
![IMG_0721.PNG IMG_0721.PNG](https://forums.macrumors.com/data/attachments/659/659712-f9dc695aab71cf581594114e16ec5638.jpg)
![IMG_0722.PNG IMG_0722.PNG](https://forums.macrumors.com/data/attachments/659/659713-907878f203b69872000863b5641f9f33.jpg)
Geekbench4 Results After
![IMG_0723.PNG IMG_0723.PNG](https://forums.macrumors.com/data/attachments/659/659714-11f127c72960c1d2a2d128430a9d6107.jpg)
As you can see, the battery makes a huge difference on benchmarks. Feel wise, the difference is even more pronounced. Apps that used to take 5 seconds to load take only 1 or 2 seconds. The camera app is faster. Screenshots are faster. It's totally worth swapping the battery for. I can probably go one more year before upgrading to the iPhoneX S2.
I will say that iOS10 is still much faster than my newly renovated iOS11 device. I accept that the 1GB of RAM is limiting and that I should expect some slowdown. But I needed wOS4, so I had to update. The battery swap at least makes the iOS11 experience bearable.
ft