iOS 17 Battery Drain: Fix Your iPhone Now

If your iPhone’s battery is draining faster than usual after updating to iOS 17, you’re not alone. This guide walks you through the most effective fixes, from quick settings tweaks to deeper resets, so you can restore solid battery life without losing your data.

What You’ll Need

Your iPhone (any model that supports iOS 17)
Your Apple ID password (for signing back in after a reset)
Wi-Fi connection (for downloading updates and restoring)
Optional: A computer with Finder (macOS) or iTunes (Windows) for a full restore

Step-by-Step

Check which apps are draining your battery. Go to Settings > Battery. Under “Battery Usage By App,” you’ll see a list of apps and their usage. Look for apps with high “Background Activity” or ones you rarely use. If an app shows unusual activity, delete it or force-quit it (swipe up from the bottom and swipe the app away).
Update to the latest iOS 17 version. Apple regularly releases point updates (like iOS 17.5.1) that fix battery drain bugs. Go to Settings &em; General > Software Update and install any available update. This is often the simplest fix.
Restart your iPhone. A simple restart clears temporary glitches. Press and hold the side button and either volume button until the power slider appears, then slide to power off. Wait 30 seconds, then turn it back on.
Turn off Background App Refresh for non-essential apps. Go to Settings > General > Background App Refresh. You can turn it off entirely or select only the apps that truly need it (like Mail or Messages). This prevents apps from refreshing content in the background, saving significant battery.
Disable Always-On Display (if you have an iPhone 14 Pro or later). Go to Settings > Display & Brightness > Always-On Display and turn it off. While convenient, it constantly uses power to show the time and widgets.
Review Location Services. Go to Settings > Privacy & Security > Location Services. Check each app’s setting. Set apps that don’t need your precise location to “While Using” or “Never.” Also, scroll to the bottom and tap “System Services,” then turn off things like “iPhone Analytics” and “Routing & Traffic” if you don’t use them.
Turn off unnecessary notifications. Go to Settings > Notifications. For apps that don’t matter, disable notifications entirely or set them to “Deliver Quietly” (which won’t light up the screen or sound).
Check battery health. Go to Settings > Battery > Battery Health & Charging. If your Maximum Capacity is below 80%, the battery may be degraded and need replacement. This is a hardware issue, not a software one.
Reset all settings. If nothing else works, go to Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings. This won’t delete your data, but it will reset things like Wi-Fi passwords, wallpapers, and notification settings. You’ll need to re-enter your Wi-Fi password after.
Restore your iPhone (last resort). Back up your iPhone to iCloud or your computer, then do a full restore. On a computer, connect your iPhone, select it in Finder/iTunes, and choose “Restore iPhone.” After it completes, set it up as new or restore from your backup. This wipes the device clean and often fixes persistent software issues.

Common Mistakes

Not updating iOS. Many people ignore software updates, but Apple’s point releases frequently contain battery drain fixes. Always update to the latest version.
Turning off everything. Over-aggressively disabling features can make your iPhone less useful. For example, turning off Background App Refresh entirely may cause email to not update until you open the app. Balance battery life with functionality.
Ignoring battery health. If your battery is at 78% capacity, no software tweak will fix the drain. It’s a hardware issue that needs a battery replacement.
Force-quitting all apps. Force-quitting apps actually uses more battery because the next time you open them, they have to reload from scratch. Only force-quit an app if it’s frozen or misbehaving.
Using third-party “battery saver” apps. These apps often run in the background, using more battery than they save. iOS already has built-in battery management; you don’t need external help.

Tips

Enable Low Power Mode. When your battery is below 20%, iOS will prompt you to turn it on. You can also enable it manually in Settings > Battery. It reduces background activity and performance, but it’s great for extending battery life in a pinch.
Use Wi-Fi instead of cellular data. Wi-Fi uses less power than cellular, especially when you have a weak signal. If you’re at home or work, connect to Wi-Fi.
Turn off 5G. If you don’t need blazing-fast speeds, go to Settings > Cellular > Cellular Data Options > Voice & Data and select “LTE.” 5G can drain battery faster, especially in areas with weak 5G coverage.
Reduce screen brightness. The display is one of the biggest battery consumers. Turn down brightness or enable Auto-Brightness in Settings > Accessibility > Display & Text Size.
Keep your iPhone cool. Heat degrades battery health. Avoid leaving your iPhone in direct sunlight or in a hot car.

Troubleshooting

If you’ve followed all the steps and your battery still drains quickly, try these:

Wait a few days after updating. iOS re-indexes your photos, messages, and other data after an update, which can temporarily cause high battery usage. Give it 2-3 days to settle.
Check for a rogue app. In Settings > Battery, look at the graph. If a specific app shows constant background activity, delete it and see if battery improves. If it does, reinstall the app (or find an alternative).
Contact Apple Support. If you’ve tried everything and the problem persists, it might be a hardware issue or a rare software bug. Apple Support can run diagnostics and, if your iPhone is under warranty, repair it for free.
Use a genuine charger. Non-certified chargers can damage your battery or cause it to drain faster. Always use Apple-certified chargers and cables.

Frequently Asked Questions

Why is my battery draining so fast after the iOS 17 update?

iOS 17 introduced new features and background processes that can temporarily increase battery usage. Additionally, the update process itself re-indexes data, which consumes extra power for a few days.

Will turning off Background App Refresh really help?

Yes, it can. Background App Refresh allows apps to check for new content even when you’re not using them. Disabling it for apps you don’t need to be constantly updated (like social media) can save noticeable battery life.

Should I turn off Always-On Display?

If you have an iPhone 14 Pro or later, turning off Always-On Display can save a few percentage points per day. It’s a trade-off between convenience and battery life. If you’re struggling with battery, turn it off.

Is it safe to reset all settings?

Yes, it’s completely safe. It doesn’t delete your photos, messages, or apps. It only resets system settings like Wi-Fi passwords, wallpaper, and notification preferences. You’ll need to re-enter your Wi-Fi password afterward.

How long should a full restore take?

A full restore can take anywhere from 15 minutes to an hour, depending on your internet speed and the amount of data. After the restore, you’ll need to set up your iPhone as new or restore from a backup, which can take additional time.

When should I replace my battery?

If your battery health is below 80%, or if you’re experiencing unexpected shutdowns, it’s time to replace the battery. You can check this in Settings > Battery > Battery Health & Charging.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

More in this bed

The whole Tech How-To bed →