How to optimize iPhone 4s Battery Performance
After purchasing Apple’s latest gadget, my initial judgment on the iPhone 4S battery performance was disappointing. After a full charge of 100%, the battery life I was getting was between 4 hours of usage, and around 5hours and 30 minutes of standby; by any phone terms this is extremely poor. Normal usage included tweeting, texting, odd phone calls and browsing on both 3G, edge and Wi-Fi. It wasn’t lasting even a half a day, and my previous device which was an iPhone 3GS would get around 7 hours of usage, and around 9 hours of standby time. So in comparison, the iPhone 4S battery was terrible.
I initially thought the addition of the A5 processor, Siri and iOS5 would be the main cause of draining the iPhone 4S battery life, but with some experimenting of changing settings, and altering standard configurations, I consistently got around 11-12 hours standby, with around 6 hours of usage depending on the applications in question. I Initially removed the “fetch new data” option in Mail, which increased my battery life marginally, but still not enough for day to day usage of the new Apple device. I then made sure Auto-Lock was on 1 minute, with brightness reduced to 50% or less depending on lighting. The automatic mode was selected to reduce waste and keep the screen readable in all lighting conditions.
I, myself receive many messages on Twitter or Facebook, so I removed the multiple notifications I was receiving from the likes of Tweetbot and Twitter For iPhone, in order to reduce my internet usage, and streamline which apps I preferred for notifications; in my case it was Tweetbot. I also disabled the Stocks application in the notification center, so it doesn’t fetch the stock market data every time I slide down to receive a new notification, check on messages or even check the weather.
After isolating the amount of applications that use push notifications, I saw a dramatic improvement in the iPhone’s battery life, not satisfactory, but good nonetheless. I then went into Location Services, and disabled applications I didn’t want to access my location or applications that didn’t require my location, but fetched it even so. I enabled the default Camera application, Maps, Tweetbot and the default weather application, but disabled the apps I did not need. I then noticed a tab at the very bottom of the page labeled ‘System Services’. After noticing that many of the services had been used in the previous 24 hours (or even constantly on in my case) for no reason that was apparent, I disabled the compass calibration, diagnostics & usage, location based iAds, mobile network search, setting time zone, and traffic. All of which I don’t require daily, and would be a drain on resources (battery) if enabled. Before disabling the majority of these, I noticed the status bar icon for location services was continuously on in the menu bar; this could be a flaw within iOS5 or a demand from Siri, but is a drain of the battery to be fetching my current location with no need.
After 48 hours of constant use of daily tasks such as email, web browsing, social networking, texting and the odd phone call, my standby time increased from around 8-9 hours daily, to around 12 hours, with around 6-7 hours of usage including playing the occasional game. The 48 hours of testing included 3G networks, with edge and Wi-Fi for a small part, but the field testing took place in a range of locations. From fields, to built up areas, to my own office. The final results of my tests, give a range of normal day to day usage an iPhone 4S user may come across, with 3G access not always fully available or up to speed.