All of the power-saving mode in iOS 9 (+ test for effectiveness)

Apple is constantly reduces the thickness iPhone and iPad for the sake of design, offsetting the growing power consumption increasing displays and new features through a more efficient hardware platform. But every year the requests from users are growing, and Apple barely able to maintain the autonomy of the devices at least at the same level. In iOS 9 in the struggle for a new energy efficiency enters power-saving mode. That is, how it works and how well - you will find below.

What is it

As the name implies, the new energy-saving mode (Low Power Mode) - is a special mode designed to enhance autonomous iPhone operating time. Such an effect is attained internal optimization, "the-hood» iOS processes through which power consumption is reduced. Intelligent technology to increase energy efficiency work in passive and active mode. First, according to representatives of Apple's, can extend the operating time on a single charge for one hour, the second - on three. Everything works in the following way ...

Principle of operation

Power saving mode means that the functional capabilities of the gadget will be cut in order to achieve maximum energy efficiency. Something like that, you've probably seen in laptops, for example, running Windows.

Firstly, in iOS 9 Optimized Processor power management, this system is not so often refers to it in standby mode. A more detailed description is not present, but apparently it is some analog of Power Nap technology of OS X, is used for the same purposes.

Secondly, iOS 9 uses intelligent notification. Their essence lies in the fact that using the iPhone's sensors to determine when to turn on the screen, and when not. Lying in a bag, a pocket or down on a table, the smartphone will not receive a notification when a new email or tweet to illuminate the screen, while consuming precious battery power. In this case, you will hear only the sound of a notice.

Enables the power saving mode will have more radical changes in the work-iOS devices. It consumes system resources more sparingly gadget. In particular, the network activity and reduced performance in general and also disables the background update applications, checking e-mail and secondary functions such as motion effects, animated Wallpaper.

Economy mode is activated in the settings, which now has a separate paragraph "Battery". Here is "moved" usage statistics and the option to enable the display of the charge as a percentage. I know that many would not have given up the toggle switch in the "control center", but, unfortunately, no. IPhone automatically saving mode does not go, so if you often forget to charge your smartphone pm, the settings you have to look regularly.

However, a small automation is still present. When the battery is discharged to 20%, the system will display a notice with a proposal to include the energy-saving mode. Once you connect your smartphone to a power outlet and charge level will rise to 80%, iPhone returns to normal mode. Find out whether the power-saving mode is enabled, it is possible for the battery icon in the status bar: if so, instead of green or red it will be orange.

operating efficiency

One additional hour of work, despite the fact that many live in gadgets for 5-6 hours active mode - it's just wonderful. Stretch out another three hours on low battery - great, too, but this is only in theory. What will practice?

We will not make any synthetic tests and measurements, and proceed as follows: I just charged my iPhone, and I will use it as usual in the normal mode, and the next day to do the same only mode enabled energy saving. Now everyday life, so that the load and the use of the script will be exactly the same.

The usual mode of use

So, Tuesday, 14.00. I disabled the iPhone from the wall outlet. He has been charged to 100% and "hung on a string" for another half hour. Before the evening was minimal load: sending the response Telegram, notice Spark and a variety of applications, a few photos, screenshots, and their transmission via AirDrop. Evening - Tweetbot, bit Safari and Instagram.

23:51. I'm going to bed, leaving the iPhone on the bedside table. From 22:00 to 6:00 I automatically activated "Do not disturb", so no notification will be no night. I take screenshots, to fix the percentage of charge - 61.

Morning, 6:48. Without looking unplug the alarm clock and looking at a charge - 50%. Per night "eaten" as much as 11%, not too little, but it is quite normal for the beta. Sometimes worse. While I was reading Twitter for morning coffee, iPhone discharged another 11% was - 39%. Basking in the morning sun in the garden, I looked at your Zite, placing the battery to 29%. I hope to reach before noon to have time to write "Specials" look.

At 10:03 the charge level was 25%. Half an hour later, he dropped to 16%, and the iPhone suddenly disconnected. Recent data on the use, I do not see in time, but in fact we have the following: a single charge smartphone worked 20 hours and 30 minutes. The load in this case was at the middle level and below. Not the most impressive results, but something like that.

Power Saving mode

The second part of the experiment is similar to the first, with the only difference that, to recharge your iPhone to 100%, I removed it from the charging and immediately activate the power save mode. Use the script is almost no different from yesterday's, but, in spite of the economy mode to the iPhone evening discharged almost to the same level of that in the normal - 64%.

charge indicator morning showed 50%, that is, the night took 14% - even more than usual. Still, I think that today will be able to squeeze hours of battery life. After a morning of reading I have left 30% of the charge, and then I wrote the "Specials", and the battery is discharged to 16%.

After that, with minimal activity, almost in standby mode, iPhone lasted until 16:10 and is fully disconnected from the 5% charge. That is in economy mode, I was able to squeeze the day and a little over two hours of work.

results

20 hours 30 minutes to 26 hours. As you can see, the effect is. According to my observations, it is more evident during use, and when the iPhone just is - the phone is discharged as usual. Although, maybe it's my specific case. I have iPhone 5s, which has seen the battery types (number of cycles for a long time has passed for 500). If you have a fresh battery or a modern device with high capacity battery, the autonomy of growth will be more impressive.

If we talk about the use of power-saving mode, the special inconveniences I have not noticed. iPhone is fully functional, notifications come, you are always connected and is unlikely to miss something important. The only thing that annoying - it's too fast off screen. If we ignore for a few seconds or read long text, iPhone quickly reduce the level of the backlight, and then completely turn off the display.

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Power saving mode - Apple is an excellent initiative, and over time it will grow to a useful function that will appeal to all users, especially those whose gadgets do not live up to the evening charge and allowed their owners without bond.