How to Fix Galaxy S24 Lag: 7 Proven Solutions for 2026

Galaxy S24 lag is frustrating, but the good news is that in most cases, lag stems from software settings or background processes that you can fix yourself in minutes. If your S24 is stuttering during scrolling, slow to respond, or dropping frames, the solution usually involves targeting the specific culprit rather than factory resetting the entire device.

Disable RAM Plus: The Quick Fix That Works for Most Users

If you’ve noticed choppy scrolling in social media apps or stuttering when switching between apps, the root cause is often Samsung’s RAM Plus feature. This virtual memory expansion feature converts storage space into additional RAM (2GB to 8GB depending on your model), but numerous users report that enabling RAM Plus creates display refresh rate lag on the Galaxy S24’s LTPO screen.

The fix is simple and immediately effective for roughly 80% of users experiencing scrolling lag:

1. Open Settings > Device Care > Memory
2. Tap RAM Plus
3. Toggle it OFF
4. Restart your phone

Why this works: RAM Plus forces your device to use slower storage (UFS 4.0) as virtual memory, which introduces latency when the system needs to swap between physical and virtual RAM. This causes the LTPO display to struggle with refresh rate transitions, resulting in visible stuttering. Disabling it immediately restores smooth scrolling in most scenarios, though you may notice slightly slower app loading when switching between many background apps.

Clear Memory and Optimize Device Performance

Before pursuing more drastic measures, clean out RAM and remove unnecessary background processes. Samsung’s Device Care tool includes built-in optimization that clears cached data and stops battery-draining apps.

Quick Optimization (best for daily use):

1. Open Settings > Device Care
2. Tap Optimize now

This performs multiple actions simultaneously: it identifies apps using excessive battery power, clears unneeded items from memory, deletes temporary files, scans for malware, and closes background apps. The entire process takes 10-20 seconds.

Manual Memory Cleanup (for immediate relief):

1. Go to Settings > Device Care > Memory
2. Tap Clean Now

This forcefully stops background apps and frees up RAM, with noticeable improvements in app responsiveness, especially when rapidly switching between applications. You can do this multiple times per day if needed.

Deep Sleeping Apps (stops specific drains):

1. Navigate to Settings > Device Care > Memory
2. Scroll down and tap Deep sleeping apps
3. Select apps you never use in the background (social media, games, etc.)

Deep sleeping completely prevents these apps from running in the background while still allowing manual launches. Unlike disabling apps, deep sleeping preserves functionality while eliminating background drain.

Isolate Problem Apps Using Safe Mode

If lag happens in specific moments or only when using particular apps, the issue likely stems from a third-party app rather than system software. Safe Mode loads your phone with only factory apps, allowing you to test whether a third-party app is the culprit.

Enter Safe Mode (requires restart):

1. Press and hold the Power button until the power menu appears
2. Tap and hold the “Power off” option (don’t release)
3. When the Safe Mode prompt appears, tap OK

Your device will reboot in Safe Mode—you’ll see the watermark in the bottom-left corner. All third-party apps are disabled. Use your phone normally for 10-15 minutes. If lag disappears completely in Safe Mode, a third-party app is responsible.

Identify the Problem App:

1. Restart normally to exit Safe Mode
2. Open Settings > Apps
3. For suspect apps (especially social media, browsers, streaming apps), tap the app name and check Storage
4. Tap Clear Cache (this removes temporary files without deleting your data)
5. Go back and select Battery
6. Change from “Restricted” to Unrestricted (allows the app to run freely)

If clearing cache doesn’t help, uninstall the app or find an alternative. Common culprits include Twitter, Instagram, Telegram, Chrome (if using over Samsung Internet), and streaming apps like Netflix when they’re poorly optimized.

Reduce Animation and Visual Effects

The Galaxy S24 ships with beautiful but resource-intensive animations. On devices with lower free RAM or during peak usage, these animations can stutter visibly. Disabling or reducing them helps the system keep up.

For One UI 8.x and One UI 7:

1. Open Settings > Display
2. Scroll down to Animation
3. Select Slower (uses simpler, faster transitions) or Off (instant snapping)

Developer Options (advanced users):

1. Go to Settings > About phone
2. Tap Build number seven times (you’ll see a counter)
3. Return to the main Settings screen—you’ll now see Developer options near the bottom
4. Open Developer options and scroll to Window animation scale
5. Change to 0.5x or OFF
6. Also adjust Transition animation scale the same way

Reducing animations is particularly effective on the S24 because Samsung’s One UI includes complex transition effects between screens and app launches. Setting them to 0.5x speed (half the normal speed) actually makes navigation feel more responsive while keeping the visual polish.

Check for and Install Pending Software Updates

As of April 2026, Samsung has released One UI 8.5 Beta 2 for the Galaxy S24, and the stable One UI 8.0 (Android 16) update addresses many of the lag issues reported by early adopters. Older firmware versions—particularly those stuck on One UI 6.1 or 7—have documented performance problems that subsequent updates resolved.

Check for Updates:

1. Open Settings > About phone
2. Tap Software update
3. Select Download and install

If an update is available, download it on Wi-Fi and plug in your charger before installing. The process takes 10-30 minutes depending on the update size.

Important Note: While One UI 8.0 solved many scrolling and stuttering issues, some users reported initial performance regressions immediately after installation. If you just updated and suddenly experience worse lag, wait 24-48 hours—your device needs time to reindex and optimize system files. After this period, run Device Care optimization and disable RAM Plus if you haven’t already.

Monitor and Manage Thermal Throttling

The Snapdragon 8 Gen 3 (or Exynos 2400 in some regions) in the Galaxy S24 is a powerful chip, but it generates significant heat during gaming, video recording, or demanding tasks. When your device exceeds its safe operating temperature (usually around 45-50°C), the processor automatically throttles—reducing clock speed to prevent hardware damage. This creates noticeable lag and frame drops.

Check Your Device Temperature:

Unfortunately, Samsung hides the actual temperature reading from the main UI, but you can infer throttling from performance drops. Use this diagnostic approach:

1. Open Settings > Device Care > Battery and monitor the battery temperature indicator (on some One UI versions)
2. Launch a demanding game (Genshin Impact, Call of Duty Mobile) and play for 5 minutes
3. If the game suddenly becomes sluggish and drops from 60fps to 30fps, throttling is active
4. Stop the app and wait 5 minutes—performance should return to normal

Prevent Thermal Throttling:

• Remove the case during gaming – Cases trap heat. A 2-3 minute session without the case allows passive cooling
• Use a cooling accessory – Consider the TORRAS PolarCircle Qi2.2 Wireless Charger with built-in semiconductor cooling, which maintains safe charging temperatures while gaming and includes a 45W fast charger. Alternatively, cooling cases with passive heat dissipation are available for under $20
• Enable Game Booster – Go to Settings > Advanced features > Game Booster Settings and enable Game Booster. On One UI 7 and later, you can adjust the performance mode per game: set demanding titles to High Performance and lighter games to Balanced to reduce heat
• Close background apps – See the RAM cleanup section above; every app running increases CPU load and heat
• Avoid charging while gaming – This is the single largest heat producer. Charging creates internal resistance that generates heat independently of the processor

If you experience thermal throttling during normal use (not gaming), a rogue app is likely keeping your CPU active. Proceed to the next section.

Identify and Force-Stop Battery Draining Background Processes

Some apps behave poorly and keep the processor running at maximum clock speed even when you’re not using them. This causes both thermal throttling and lag because other apps don’t get adequate CPU resources.

Find the culprit:

1. Open Settings > Device Care > Battery
2. Scroll down to Usage details and look for apps consuming abnormal battery percentage
3. Healthy usage: Your screen is 20-40%, system UI is 5-10%, and any single app should be under 10%
4. Red flag: A single app using 25%+ of battery while you haven’t actively used it

Common offenders (as of 2026): Amazon, Flipkart, OTT streaming apps (Netflix, Prime Video), social media apps after recent updates, and outdated third-party browsers.

Fix the app:

1. Tap the misbehaving app in the battery list
2. Choose Unrestricted (allows it to run freely) OR Restricted (prevents background activity)
3. Go back to Settings > Apps > (app name) > Battery > Toggle Allow background activity OFF
4. If the app still drains battery, uninstall it or check for updates

Be cautious: messaging and email apps need background access to receive notifications. Restricting them will break push alerts. Restrict only apps you don’t need real-time notifications from.

Factory Reset (Last Resort for Persistent Lag)

If you’ve tried all previous steps and lag persists across all apps without obvious culprits, a factory reset may help. This is your last troubleshooting option before contacting Samsung support or considering a replacement.

Before you reset:

• Back up your data via Samsung Cloud (open Settings, tap your name/account, choose “Samsung Cloud”)
• Note your Google account and any important credentials
• This process deletes all apps, photos, messages, and personal data
• The reset takes 15-30 minutes

Perform the reset:

1. Open Settings > General > Reset
2. Tap Reset all settings OR Factory data reset
3. If asked, enter your PIN or pattern
4. Confirm by tapping Reset (do not interrupt this process)
5. Your device will restart and reinstall One UI—this takes 10-15 minutes
6. Set up your accounts and apps fresh

After the reset:

DO NOT immediately restore from a Samsung Cloud backup—this may restore the app or setting causing the lag. Instead, manually reinstall only essential apps one at a time and test performance. If lag returns when you reinstall a specific app, you’ve found your culprit. Leave it uninstalled.

If your device is still laggy after a factory reset on the latest One UI version, the issue is likely hardware-related (defective RAM, NAND storage corruption, or thermal sensor failure). Contact Samsung support and request a warranty replacement or repair.

Warranty and Support Options

If your Galaxy S24 is still under the one-year manufacturer warranty and none of these steps resolved the lag, you have options:

• Samsung Customer Service: Visit samsung.com/us/support (or your regional equivalent) and use the chat or phone support option. Explain your troubleshooting steps and request an in-warranty replacement
• Carrier Support (AT&T, Verizon, T-Mobile, etc.): If you purchased through a carrier, they often handle replacements faster than Samsung
• Retail Return: If you’re within 30 days of purchase (varies by retailer), most carriers and retailers like Best Buy allow returns or exchanges

Samsung has acknowledged lag issues on S24 devices and released multiple updates to address them. If you’re on an older firmware version and support refuses to help before you update, updating to One UI 8.0 or later often resolves the issue entirely.

Quick Reference: Fastest Fixes by Scenario

Your Problem	Most Likely Cause	Fastest Fix
Social media scrolling is choppy/laggy	RAM Plus enabled, LTPO refresh lag	Settings > Device Care > Memory > RAM Plus > Toggle OFF
Phone feels slow when opening apps	Too many background apps, low free RAM	Settings > Device Care > Optimize now
Lag only happens in one app	That specific app is poorly optimized	Enter Safe Mode to confirm, then uninstall the app
Phone gets hot and lags during gaming	Thermal throttling	Remove case, close background apps, enable Game Booster
Battery drains fast AND phone lags	Rogue background app	Settings > Device Care > Battery, find high-usage app, restrict it
Lag started after a recent update	Indexing and optimization in progress	Wait 48 hours, then run Device Care optimization

FAQ: Galaxy S24 Lag Questions Answered

Is disabling RAM Plus permanent, or will it reset after an update?

RAM Plus settings persist through software updates. Once you disable it, it stays off unless you manually re-enable it. However, be aware that disabling RAM Plus slightly reduces your available RAM for background apps—you might notice slower performance when switching between 10+ apps simultaneously. For most users, the trade-off (smooth scrolling vs. slightly slower multitasking) is worth it. If you want to re-enable it later, just toggle it back on in Settings > Device Care > Memory > RAM Plus.

Will a factory reset fix lag if no app is causing it?

A factory reset can fix software-related lag (corrupted cache, permission conflicts, system file errors), but if lag persists after a factory reset on the latest firmware, the problem is almost certainly hardware-related. This could mean defective RAM, failing storage, or thermal sensor failure. Contact Samsung support for a warranty claim rather than attempting further troubleshooting. Samsung has acknowledged some S24 units shipped with manufacturing defects affecting performance.

My S24 Ultra is overheating more than my friend’s—is this normal?

No—while the Snapdragon 8 Gen 3 runs warm under load, excessive heat is not normal during light use. This points to a rogue background app, thermal sensor miscalibration, or a defective battery (swollen batteries generate excess heat). Try the battery drain diagnostics in the sections above. If a specific app is responsible, uninstall it. If the phone heats up with all apps disabled (Safe Mode), request a warranty replacement from Samsung immediately—don’t delay.

Does clearing the cache for all apps help, or only specific ones?

Clearing cache for all apps simultaneously is safe and can provide a modest 5-10% performance boost by removing temporary files. However, it won’t fix lag caused by inefficient apps or RAM Plus. Go to Settings > Apps, tap the three-dot menu > Show system, then tap each app and select Storage > Clear Cache. Do this monthly for best results. Alternatively, Settings > Device Care > Optimize now does this automatically.

I just updated to One UI 8.0 and lag got worse—should I roll back?

No—rolling back is not supported by Samsung and voids your warranty. Instead, wait 48 hours (your device is reindexing files), then run Settings > Device Care > Optimize now. This should resolve post-update lag. If it doesn’t, disable RAM Plus and clear cache for your most-used apps. One UI 8.0 actually fixed many S24 lag complaints, so a bit of patience usually pays off. If lag continues beyond 48 hours, contact Samsung support.