Many iPhone 18 Pro and iPhone 18 Pro Max users will experience their phone’s battery mysteriously losing charge. This can happen for a variety of reasons. According to Apple’s tech specs, iPhone 18 Pro offers up to 36 hours of video playback and up to 24 hours of typical use. iPhone 18 Pro Max offers up to 45 hours of video playback and up to 30 hours of typical use. Recently, iPhone 18 Pro and iPhone 18 Pro Max users have been complaining about their phones losing charge quickly; these complaints are serious taking into account that these phones are new.
In this article, we will give you a way to test whether your phone’s battery is discharging itself. We will also discuss a couple of other possibilities and give the troubleshooting tips necessary to nail down the cause of your iPhone 18 Pro or iPhone 18 Pro Max battery drain issues.
As a tip before you begin the troubleshooting process, you may want to set up your iPhone 18 Pro or iPhone 18 Pro Max to show you the battery percentage so you can more easily keep track of where your battery charge is at:
- Go to Settings > Battery and turn on Battery Percentage.
- Take a look at the status bar. You can see the battery percentage at the top-right.
Is an app using up my charge?
If a particular app is using too much battery power, you can check this in Settings > Battery. Scroll down below the graphs to the App and System Activity Usage section.
- You will see which apps have used the most battery.
- Tap on an app to view more battery usage details.
If you find that one app has been using most of your battery, make sure that the app and your phone are updated. If it isn’t an app you need, you may consider deleting it. If this battery drain is happening after a recent update, wait a few days and then check again.
Is my iPhone 18 Pro battery draining itself?
If you are having battery issues on your iPhone 18 Pro and haven’t been able to determine another cause, this is pretty easy to check.
- Charge your iPhone 18 Pro or iPhone 18 Pro Max completely.
- Disconnect or remove from the charger and make a note of the charge level in case it isn’t 100%.
- Power off your phone:
- Press and hold the side button and the volume up button until the power-off slider appears. Drag the slider.
- Leave your phone powered off for several hours. Overnight may be a convenient time to do this.
- Power on your phone by pressing and holding the side button until the Apple logo appears.
- Wait a few minutes, then check how much charge has been lost while your phone was turned off.
- If your battery percentage has dropped significantly, check your battery health: open Settings, tap Battery, and then tap Battery Health. If you see Service next to Battery Health, consider replacing your battery to restore full performance and capacity.
Other tips
To help with iPhone 18 Pro battery drain issue, you can try the following to help preserve your phone’s charge:
- Update your phone and all apps.
- Restart your phone.
- Turn on Low Power Mode. Open Settings, tap Battery, and then tap Power Mode. Turn on Low Power Mode.
- In Settings > Display & Brightness, you can do the following:
- Turn down your screen brightness.
- Set the screen to automatically turn off after a shorter period of time. Select Auto-Lock and choose from the list of times.
If you have found that your phone’s battery issues are not the result of a particular app, and if you haven’t recently updated (if you have recently updated, wait a few days and then check again), you may want to contact Apple Support. They can help you determine if you need to replace your iPhone 18 Pro or iPhone 18 Pro Max’s battery.
