The good news: in most cases, you can get a noticeable speed boost without buying a new device. These are some of the best ways to tackle slow performance issues without guesswork.
If you’re also running iOS 26’s new visual style, you may want to check out my take on the practical fixes in iOS 26.1 quality-of-life improvements—some UI tweaks (especially around animations and visual effects) can make an older iPhone feel dramatically more usable.
A quick mindset shift: speed is usually one of three problems
Most slowdowns come from:
- Not enough free storage (your device can’t “breathe,” especially when you’re near full storage)
- Too many background tasks (CPU/RAM constantly busy)
- Aging batteries or buggy software (performance gets capped or unstable—sometimes the root cause is battery-related)
Keep those three buckets in mind as you go through the checklist.
Part 1: Revving up your iPhone
1) Update smart (and don’t rush major upgrades)
Point releases (the smaller “dot” updates) often include bug fixes and performance patches.
- Go to Settings > General > Software Update.
- If your iPhone is older, consider waiting a week or two after a major iOS release before upgrading—early versions can run extra background indexing that temporarily slows things down.
For Apple’s official troubleshooting checklist, see If your iPhone or iPad is running slow (Slow — Apple Support).
2) Do the classic full restart
If you haven’t restarted in weeks, you’re basically letting small glitches pile up—little crashes, stalled processes, and random junk that never clears cleanly.
- Power the iPhone off completely.
- Wait 30 seconds.
- Power it back on.
3) Stop automatic downloads you don’t need
Apps quietly updating in the background can waste storage, cellular data, and resources—especially if you have automatic downloads enabled across multiple devices.
- Go to Settings > App Store.
- Turn off App Updates (and any other automatic downloads you don’t want).
4) Reduce animations for a snappier feel
This won’t “upgrade” your processor, but it can make your phone feel faster (especially on older models).
- Go to Settings > Accessibility > Motion.
- Turn on Reduce Motion.
If you want to go further, it can also help to reduce transparency (Transparency — Settings) to lighten the visual load a bit on older devices.
5) Clear Safari history and website data
Safari cache can balloon over time.
- Go to Settings > Safari.
- Tap Clear History and Website Data.
Apple’s step-by-step guide: Delete your Safari history, cache, and cookies on iPhone.
6) Free up storage (this is the biggest win)
When iPhone storage is nearly full, performance often drops because iOS has less room for temporary files.
- Go to Settings > General > iPhone Storage.
- Aim to keep at least 10% free.
This is also the most reliable form of “clearing space”—more effective than any cleaning app that promises miracles.
If you use iCloud heavily, you’ll get more mileage from these iCloud Drive pro tips—smart syncing helps you keep important files available without stuffing local storage. And if your Photos library is part of the problem, check your iCloud Photo Sync settings so photos don’t crowd the device when you don’t need them locally.
7) Offload (or delete) apps you don’t use
Still inside Settings > General > iPhone Storage:
- Tap an app you rarely use (old apps add up fast).
- Choose Offload App to remove the app itself while keeping your documents and data.
This complements the habits I cover in 12 things you should never do to your iPhone—a few “normal” behaviors quietly create long-term performance problems.
8) Check battery health (performance may be capped)
A worn battery can cause slowdowns and stability issues.
- Go to Settings > Battery > Battery Health & Charging.
- If your iPhone reports significantly reduced capacity or recommends service, a battery replacement can be one of the most noticeable speed upgrades.
Also: keep an eye on charging habits. If you’re constantly in Low Power Mode or battling heat while charging, you can see more stutters than you’d expect. And yes, iOS throttles performance in certain conditions to protect the device—battery health is the first place to check.
Part 2: Supercharging your Mac
9) Use Stacks to clean up your desktop
This sounds cosmetic, but a cluttered desktop can create real overhead.
- Right-click the desktop.
- Choose Use Stacks.
Apple’s guide: Use desktop stacks on Mac.
10) Remove menu bar clutter you don’t need
Menu bar apps often run constantly.
- Hold Command (⌘).
- Drag unwanted menu bar icons off the bar.
11) Set up Hot Corners for faster navigation
Hot Corners are small workflow shortcuts that reduce daily friction—useful in any real workflow where you bounce between apps all day.
- Go to System Settings > Desktop & Dock.
- Scroll down and choose Hot Corners.
Apple’s guide: Use hot corners on Mac.
12) Drag and drop files onto Dock apps
This is a pure productivity win: fewer clicks, less hunting.
- Drag a file (PDF, photo, document) onto an app icon in the Dock.
- The app opens the file directly.
13) Use the “speedy saving” trick in Save dialogs
When you already have the destination folder open in Finder:
- Drag the folder into the Save dialog.
- The Save dialog snaps to that location instantly.
14) Find your pointer instantly
If you lose your cursor on a big screen or multiple monitors:
- Shake the mouse (or wiggle your finger on the trackpad).
- macOS enlarges the pointer briefly.
15) Lean on Quick Look instead of opening heavy apps
Quick Look is one of the simplest ways to make your Mac feel faster.
- Select a file in Finder.
- Press Spacebar to preview.
Apple’s guide: View and edit files with Quick Look on Mac.
16) Unlock your Mac with Apple Watch
If you already wear an Apple Watch, you can eliminate a surprising amount of daily “password friction.”
- On your Mac, go to System Settings > Touch ID & Password.
- Turn on your Apple Watch under the unlock options.
Apple’s guide: Unlock your Mac with Apple Watch.
If you’re getting more value out of your Watch lately, you might also like Apple Watch Decoded.
17) Trim Login Items and background extensions
This one is often the real culprit behind “my Mac is always slow”—classic slow performance issues caused by too many things running in the background.
- Go to System Settings > General > Login Items.
- Remove anything you don’t truly need launching at startup.
- In the “Allow in the Background” section, disable background items you don’t recognize or use.
If you’re doing heavier creative work and constantly pushing storage limits, a faster external drive or NAS can keep your Mac responsive. Here’s my guide on choosing the right NAS for creators, plus a practical list of laptop setup accessories that improve daily performance.
The last resort: a clean reset (iPhone or Mac)
When you’ve tried everything and performance is still terrible, a clean install can help—but it’s a big step. Treat it like a full reset: you’re not just “fixing slow,” you’re choosing to redo settings and rebuild cleanly.
On iPhone:
- Settings > General > Transfer or Reset iPhone > Erase All Content and Settings
On Mac (general guidance):
- Restart, update macOS, and only then consider reinstalling or erasing if needed
- Apple’s help page: If your Mac runs slowly
Summary checklist (bookmark this)
| Device | Do this | Why it helps |
|---|---|---|
| iPhone | Clear Safari website data | Reduces browser bloat and fixes weird loading slowdowns |
| iPhone | Keep 10% storage free | Gives iOS room for temporary files and updates |
| iPhone | Reduce Motion | Makes the UI feel faster, especially on older devices |
| iPhone | Check Battery Health | Avoids performance caps caused by a worn battery |
| Mac | Use Stacks | Reduces desktop clutter overhead and visual mess |
| Mac | Use Quick Look (Spacebar) | Preview files without launching heavy apps |
| Mac | Remove Login Items | Stops constant background drag from startup apps |
| Mac | Set Hot Corners | Speeds up common actions and navigation |
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