I updated to iOS 9 on my iPad mini and iPhone 5s within the first week of launch, and been using it for nearly 2 weeks now. The update was a lot easier this time due to the space optimisations and I managed to do an OTA update on the iPhone unlike last time.
iOS 9 comes with its share of tweaks and optimisations that are supposed to improve performance on older devices, but I haven’t noticed much difference in terms of performance on either device which is in line with the observations of others. That said a few games like Limbo that were crashing on startup on my iPad mini (even after device restarts) seem to be at least working now.
While the iPhone 5s gets pretty much all the new features introduced in iOS 9 barring the ones that require special hardware, the iPad mini is left out of practically all the marquee features like content blocking, Siri-Spotlight search improvements and all of the split screen features. That said the iPad keyboard is improved and sports the cut-copy-paste & undo-redo buttons and also supports the two finger cursor navigation gesture. iOS 9 also brings back the 4×4 grid of icons in folders on the iPad, so it is not a total lost cause.
Battery life also seems to be in the same ballpark, though the iPhone seems to be exhibiting a slight improvement in the last few days. Of course that is hardly sufficient to last me a full day even with the new Low Power Mode. The additional details in the battery usage section of settings is also quite useful as it shows the screen on time and overall active time for each item as well.
I also noticed that iPhone only apps when run on the iPad no longer show the top status bar as a part of the app, but leave it on the top of the screen. This is possibly a result of the split screen multitasking capabilities introduced in iOS 9.
A gotcha to keep in mind on the iPhone is the Wifi assist feature (something that’s been on Android for a while) that’s on by default and tries to use the mobile network when the wifi is poor. This can easily burn through your data plan and is best left turned off on limited data plans.
There are also some features like app slicing that are currently disabled due to glitches, but should improve the storage situation on all devices. This is one of the features I’m really looking forward to on my 16 GB iPhone.
Overall, the experience has been quite good though the iPad mini is beginning to show its age. Pretty evident why Apple pulled the device off the market earlier this year. This year also marks a complete 64 bit transition for Apple’s entire device lineup starting from the iPod Touch to the iPad and Apple TV.