If the onset of your battery drain is sudden, it may be that an app updated or your phone installed a patch. The newer version could contain features that are more resource intensive, or has a bug which runs your battery dry. Check to see if any apps have updated recently.
Display brightness and screen time-out settings
The brightness of your iPhone screen can have a significant impact on your battery life. If your display is too bright, it can quickly drain your battery. Similarly, if your screen timeout settings are set for too long, it can also reduce your battery life.
There are many reasons why iPhone batteries drain overnight. While many of these reasons are specific to the type of iPhone you use, some are general. Some of these reasons include running background apps, leaving Bluetooth and WIFI on, and refusal to use the low battery mode.
If your phone's battery is draining faster than usual, it either means you're using a lot of energy or your phone is not using energy efficiently. This could mean you're overworking your phone by running too many applications, or something is physically wrong with the phone battery itself.
Open the Battery usage section, and you can check out stats for the last seven days or the last 24 hours using the drop-down menu just to the right. In either case, you'll see a chart showing battery drain over time, and under that, you'll see the applications that are most responsible for it.
If your battery drain in within between 5-10% per hour, this is considered normal.
No matter what you do, your iPhone® battery has a limited shelf life. As it ages, the battery slows—so a full charge won't last as long. Most batteries are good for at least 2 to 3 years, often longer, but how do you know when to replace your iPhone battery? At Asurion, we help millions of people maximize their tech.
It was thus found that the dark mode can significantly save battery life in peak brightness, usually employed by smartphone users in outdoor conditions under sunlight.
The two things that cause the most battery drain in your iPhone are its screen and cellular service. Obviously, you know when you're actively using your phone, but your iPhone is often performing tasks in the background and even lighting up your screen without you noticing.
We can replace your iPhone battery for a service fee. Our warranty doesn't cover batteries that wear down from normal use. Your iPhone is eligible for a battery replacement at no additional cost if you have AppleCare+ and your product's battery holds less than 80 per cent of its original capacity.
When should I replace my iPhone battery? Typically, when your iPhone holds less than 80% of its maximum capacity, it's time to upgrade the battery. You can check your battery's health by going to Settings then Battery Health.
A normal battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions. The one-year warranty includes service coverage for a defective battery. If it is out of warranty, Apple offers battery service for a charge. Learn more about charge cycles.
Apple recommends, as do many others, that you try to keep an iPhone battery between 30 and 80 percent charged. Topping up to 100 percent isn't optimal, although it won't necessarily damage your battery, but letting it regularly run down to 0 percent can prematurely lead to a battery's demise.
Your iPhone is too old
A helpful way to know if it's time to replace your iPhone is to think about how old it is. Most iPhones last between 4 and 7 years, however this is not guaranteed.
How Long an iPhone Battery Can Last. A new, 100%-80% capacity iPhone battery can hold a charge for 8-20 hours, depending on how it's used. Sitting off in your pocket, it can last all day.
Update software. Both operating system and app updates could resolve battery life issues. Turn down screen brightness - High screen brightness is a major battery life killer. Alternatively, enable auto-brightness under Settings > Accessibility > Display and Text Size.
Android phones have a feature called adaptive charging. To help preserve your phone battery, you can charge your phone steadily overnight using Adaptive charging.
You should turn the Battery Saver on when you're low on battery and can't charge your device, or even when you are about to go on a lengthy trip, and you know that charging your device will be problematic.
Settings > Battery > Usage details
Open Settings and tap on the Battery option. Next select Battery Usage and you'll be given a breakdown of all the apps that are draining your power, with the most-hungry ones at the top.
The simplest way to keep background apps in check is by using Android's Adaptive Battery feature. Turn it on by going to Settings > Battery > Adaptive preferences and toggle Adaptive Battery on. You may also want to turn on Adaptive Charging, while you're at it.