iPhone 5S battery performance

Charging an iPhone 5 using a wall charger
Infusing lifeblood of the phone

Even with excellent performance, lackluster battery life will tarnish the usability of a phone. It's thus natural to see if iPhone 5S has made any improvements with battery usage from the previous generation. Apple has targeted it to be at least as good as iPhone 5, so I wanted to see how the two really compares in real life use.

The official capacities are 5.45Wh (3.8V 1440mAh) for iPhone 5 and 5.92Wh (3.8V 1560mAh) for iPhone 5S, an 8.6% difference. So 5S could use a little more power and still stay even. The iPhone 5 I have has seen use for about two months, while iPhone 5S has been with me for a month. So both have relatively fresh batteries close to these original capacities.

With these in mind and full charge, I started using the two devices, which were running iOS 7.0.3 now, in the same manner throughout the day. This meant opening the same app and taking the same actions at the same time. It's an interesting experience, and because apparent responsiveness of the two devices are similar at casual use, it wasn't too difficult to carry out.

To even the playfield further, push notifications, push data and automatic app updates were disabled, while screen brightness was fixed to 33%, which is good for indoor use. WiFi and Bluetooth were both enabled, but not used, so LTE was responsible for data. Other settings like GPS and visual effects were kept on by default. So how did the draining of the battery turn out?
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Server updated to Mavericks!

Screenshot of installing OS X Mavericks downloaded from Mac App Store
Installing OS X Mavericks downloaded from Mac App Store
I've been wary of installing new OS upgrades on the server because it can easily mess up the custom configuration I set up. In fact, that was primarily the reason why my old iMac that ran my websites (including this one) until early this year ran Snow Leopard (OS X 10.6) for 3 and a half years until it broke down. I passed upgrading to Lion (10.7) or Mountain Lion (10.8 ) all that time. I ultimately moved to Mountain Lion only because the new Mac mini that replaced the iMac required it.

This time was different. I had simplified the server configuration and kept track of the modifications. Basically, it was down to a couple of configuration files for built-in Apache server, and a separate MySQL installation. Downloading Mavericks (10.9) from the Mac App Store was what took most of the time. It was released as a free upgrade from anything that ran Snow Leopard and up, so there was a huge demand. Once the download was complete, I ran the installer, and it took about half an hour to complete.

Screenshot of iWork upgraded for free on Mavericks
Free iWork upgrades!
I noticed that the websites were broken after the installation, as expected. However, checking the changes revealed that I only needed to fix the main Apache server configuration file. A couple of minutes of fiddling with the file later, the websites came back working properly. This was easily the fastest and the most trouble-free transition to the new major OS X version ever.

As a bonus, Apple had decided to make iWork upgrades to the just-released latest version for free, regardless of whether it was bought on DVD or on Mac App Store. My old copy of iWork '09 installed from the disc got properly upgraded, and the apps now show up in purchases list. Free OS and office suite upgrade, and smooth server transition. Apple has spoiled me.
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