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Why does your iPhone battery drain so fast?
Your iPhone usually runs out of battery fast because the battery is worn, or because apps, the screen, location and background refresh use more power than you’d expect. Start by checking Settings > Battery. Here you can see which apps use the most power and how the battery is doing. If it says the battery needs servicing, a battery replacement is the answer.
What does it cost?
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This guide goes into detail about the iPhone settings that affect battery use. If you want to know how to spot a worn battery on any type of phone, read your phone’s battery drains fast.
Check your iPhone’s battery health
Go to Settings > Battery > Battery Health. Here you’ll see the maximum capacity compared with a new battery. All iPhone batteries wear out over time, and after a couple of years of use most will have lost some capacity. If your iPhone shows a message saying the battery needs servicing, or the health can’t be verified, the battery should be checked.
iPhone settings that use a lot of power
The screen
High brightness and a screen that’s always on use a lot of power. Turn on auto-brightness, and choose a shorter time under Display & Brightness > Auto-Lock.
Background App Refresh
Under General > Background App Refresh you can turn it off for apps that don’t need it.
Location Services
Under Privacy & Security > Location Services you can choose “While Using the App” instead of “Always”.
Notifications and widgets
Lots of notifications keep waking the screen. Turn them off for apps you don’t need them from.
Poor signal and 5G
The phone uses more power when the signal is weak. If coverage is poor, using Wi-Fi can help.
Low Power Mode
Turn on Low Power Mode in Control Centre when you need to save battery.
After an iOS update
Right after an update, your iPhone can use more power for a couple of days while it indexes photos and data in the background. That’s normal. If it carries on, it’s worth looking at the settings above.
When should the battery be replaced?
If the settings don’t help, the phone suddenly switches off, or the battery health is low, a new battery is the most effective solution. If the phone is bulging, stop using and charging it. You’ll find good habits for making the battery last longer in extend the life of your iPhone’s battery.
Frequently asked questions
Where can I see the battery health on my iPhone?
Under Settings > Battery > Battery Health. It shows the maximum capacity and whether Apple recommends service.
Why does my new iPhone run out of battery fast?
Often because it’s just been set up and is downloading data, photos and apps in the background. It usually settles down after a few days.
Does closing all my apps help?
Usually not. iOS manages background apps itself. It helps more to turn off Background App Refresh and Location Services for the apps that use a lot.
How much does an iPhone battery replacement cost?
It depends on the model. See the price on our prices page. You’ll get the price before we start.
ITech-Rep replaces iPhone batteries in our shops in Odense and Nyborg. Read more about battery replacement and iPhone repair, or book online.
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