Why Your iPhone Is Lagging and How to Fix It Fast

Why Your iPhone Is Lagging and How to Fix It Fast

T

Technobezz Editorial

Editorial Team

Oct 15, 2025
3 min read

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Does your iPhone feel slow and unresponsive? Even the fastest iPhones can start lagging over time. The good news is most performance issues have simple solutions you can try right now.

Lagging usually happens for a few common reasons: low storage space, too many apps running, background processes, or battery health issues. Let's walk through the quickest fixes to get your iPhone running smoothly again.

Read more - Why Is My iPhone Battery Draining So Fast? (And How to Fix It)

Restart Your iPhone

The simplest fix is often the most effective. A quick restart clears temporary files and stops background processes that might be slowing things down.

Just hold the power button and slide to power off, then turn it back on. This basic step resolves many performance issues instantly.

Close Background Apps

Too many apps running in the background can drain resources. Here's how to close them:

For iPhones with Home button:

  • Double-tap the Home button
  • Swipe through your open apps
  • Swipe up on each app to close it

For iPhones without Home button:

  • Swipe up from the bottom of the screen
  • Swipe left or right to find apps
  • Swipe up on each app to close it

Check Your Battery Health

When your battery health drops below 80%, your iPhone may slow down to prevent unexpected shutdowns. To check:

  • Go to Settings > Battery > Battery Health
  • If Maximum Capacity is below 80%, consider battery replacement

Clear Safari Cache and History

Safari stores website data that can build up over time. Clearing this frees up storage and can speed up browsing:

  • Open Settings > Apps > Safari
  • Scroll down to "Clear History and Website Data"
  • Tap to confirm
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Free Up Storage Space

When your iPhone storage gets too full, performance suffers. Try these steps:

  • Go to Settings > General > iPhone Storage
  • Delete unused apps and large files
  • Move photos to iCloud (Settings > [Your Name] > iCloud)
  • Offload unused apps (Settings > App Store > Offload Unused Apps)

Update Apps and iOS

Outdated software can cause performance issues. Keep everything current:

Update apps:

  • Open App Store
  • Tap your profile icon
  • Update available apps

Update iOS:

  • Go to Settings > General > Software Update
  • Download and install any available updates
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Manage Background Processes

Several features run in the background and can slow your iPhone:

Background App Refresh:

  • Settings > General > Background App Refresh
  • Turn off for apps you don't need updating constantly

Automatic Downloads:

  • Settings > App Store
  • Turn off automatic downloads for apps and updates
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Optimize Visual Effects

Reducing animations and transparency can improve performance, especially on older iPhones:

Reduce Motion:

  • Settings > Accessibility > Motion
  • Turn on "Reduce Motion"

Reduce Transparency:

  • Settings > Accessibility > Display & Text Size
  • Turn on "Reduce Transparency"

Use Low Power Mode

Low Power Mode temporarily reduces background activity to extend battery life and can improve performance:

  • Settings > Battery > Low Power Mode
  • Or ask Siri "Turn on Low Power Mode"

Monitor Battery Usage

Some apps drain more battery than others. Check which ones are the culprits:

  • Settings > Battery
  • View battery usage by app over last 24 hours
  • Close or uninstall apps using excessive power

Remove Unused Widgets

Widgets constantly update and can slow down your home screen:

  • Long press any widget
  • Tap "Remove Widget"
  • Keep only the widgets you actually use

Disable Siri Suggestions

Siri's background processing can impact performance:

  • Settings > Siri & Search
  • Turn off "Show in Look Up" and "Show in Spotlight"
  • Disable suggestions from Apple
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Reset All Settings

If nothing else works, resetting settings can resolve deeper issues without losing your data:

  • Settings > General > Reset
  • iphone-technobezz.com_reset_transfer.jpg
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  • Tap "Reset All Settings"
  • Enter your passcode to confirm
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Start with the simplest fixes like restarting and closing apps, then work through these steps until your iPhone feels fast and responsive again. Most performance issues can be resolved without drastic measures.

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