How to speed up a Samsung Android smartphone: from cleaning to flashing

Has your Samsung Galaxy began to slow down, applications take a long time to open, and the interface animation is jerky? The problem is not always the “aging” of the hardware - in 90% of cases, clogged memory, background processes or suboptimal settings are to blame. Even the flagship models of the series One UI. Even the flagship models of the series S23 Ultra or Z Fold 5 after a year of operation may work slower due to accumulated digital garbage.

In this article - 12 proven ways to speed up a Samsung smartphone, from basic (clearing the cache, disabling animation) to advanced (resetting to factory settings, choosing alternative firmware). We'll look at which features steal performance, how to properly manage memory, and when to think about replacing the battery. All methods have been tested on models from One UI steal productivity, how to properly manage memory and when to think about replacing the battery. All methods are tested on models from Galaxy A52 to S24+ —taking into account the characteristics of processors Exynos and Snapdragon.

Spoiler: if your smartphone is older than 3 years, the most effective way to restore performance is a combination of resetting the settings + disabling unnecessary Samsung services + installing light firmware (for example, LineageOS). But start with simple steps - they often give a speed increase of 30-50% without radical measures.

1. Diagnostics: why your Samsung is slowing down

Before optimizing, determine the "bottleneck". Samsung there is a built-in tool for this — Device Care (in the menu Settings → Device maintenance). The following are displayed here:

• 📊 Used memory space (critical if <10% of the total volume is free)
• 🔋 Battery status (if the capacity drops below 80%, the smartphone forcibly limits performance)
• 🛡️ Background processes (applications consuming CPU/RAM without the user's knowledge)
• 🌡️ Overheating (at temperatures above 45°C Exynos-processors throttle up to 50% power)

Pay special attention to the item Battery. If it says "Replacement required", any attempts to speed up the smartphone will be temporary - the system artificially limits the frequency. processor to extend the operating time. In this case, optimization will give an increase of no more than 10-15%.

Another key point - firmware versionCheck it in Settings → Phone information → Software versionIf yours Galaxy works on Android 11 or older, and an update to Android 14 s is available - new versions are optimized for working with modern applications. But be careful: on weaker models (for example, One UI 6, update — new versions are optimized to work with modern applications. But be careful: on weak models (for example, Galaxy A10) fresh firmware can, on the contrary, slow down the work.

⚠️ Attention: On some models Samsung (especially with processors Exynos 9611 or Snapdragon 660) updating to Android 13/14 may lead to lags in games and camera. Before updating, check reviews on forums (for example 4PDA or XDA-Developers) for your specific model.

2. Clearing memory: what to delete first

The most common cause of brakes is full memory. Samsung recommends leaving at least 10-15% of the total volume free, but in practice for smooth operation you need at least 20%. If you Galaxy S22 with 128 GB of memory, ~25 GB should be free.

Start with cleaning application cache i junk files:

1. Go to Settings → Device maintenance → Memory.
2. Click Clear now — this will delete temporary files (cache) without affecting personal data.
3. In the section Unnecessary files select Duplicates, Downloaded files and Trash.
4. For deep cleaning, use Storage → Others applications, sorted by size.

Pay special attention to the following “memory eaters”:

• 📷 Google Photos —automatically uploads original photos to the cloud, but often leaves copies on the device. Check the folder DCIM/.thumbnails.
• 🎮 Games —even after deletion, they can leave a cache in the folder Android/obb (for example, Genshin Impact or Call of Duty Mobile take up 5-10 GB).
• 📥 Telegram —downloads all media files by default. Limit this to Settings → Data and memory.
• 🎵 Music applications — Spotify, Yandex Music and YouTube Music caching tracks for offline listening.

Delete system application cache|Check the Downloads folder for unnecessary files|Empty the trash in the Gallery|Disable auto-downloading in messengers|Transfer photos to the cloud and delete local copies-->

If after cleaning less than 20% is free, consider the options:

• 🔄 Transferring files to microSD (but remember: applications from a memory card are slower!).
• ☁️ Using cloud services (Google Drive, Samsung Cloud —but they are paid for volumes >15 GB).
• 📱 Connecting via OTG flash drive or external SSD (for example, Samsung T7 Shield).

⚠️ Attention: Do not use "memory optimizers" from Google Play (for example, Clean Master or CCleaner). They do not only they don’t help, but they can remove important system ones fileswhich will lead to failures. The built-in Device Care from Samsung copes with the task no worse.

3. Optimizing One UI: disabling what slows down

One UI —the proprietary shell Samsung —is beautiful, but voracious. Many of its functions work in the background, consuming RAM and CPU. By disabling what is unnecessary, you will free up to 1-1.5 GB of RAM.

List of what can be safely disabled:

Another hidden performance hog - Samsung Knox services. They are needed for security (for example, for Samsung Pay), but if you do not use them, you can disable them:

1. Go to Settings → Biometrics and security → Other security settings.
2. Find Knox and disable all related options.
3. In Settings → Applications find Knox Guard, Knox Vault and disable them.

For advanced users: you can disable some system applications via ADB (Android Debug Bridge). For example, com.sec.android.app.launcher (standard launcher) or com.samsung.android.app.spage (left panel Bixby). But be careful - incorrect commands can lead to device brick.

4. Performance settings: operating modes and hidden parameters

Samsung hides several useful options for managing performance. They can be found in operating modes and developer options.

Operating modes (available in Settings → Device maintenance → Battery → Operating modes):

• ⚡ Maximum performance —disables all restrictions, but drains the battery faster. Useful for gaming or video editing.
• 🔄 Adaptive —balance between speed and operating time (recommended for everyday use) usage).
• 🔋 Battery saving — limits background activity and processor frequency (turn on only when the battery is low).

To access hidden settings enable developer mode:

1. Go to Settings → Phone information → Software information.
2. Click 7 times on Build number (a notification "You have become a developer" will appear).
3. Go back to Settings → Developer options.

In this menu, pay attention to:

• 🎯 Window animation scale, Animation scale transitions, Animator duration — set Off or 0.5x to speed up the interface.
• 🖥️ Background processes —limit to Maximum 2 processes (but this may lead to restarting some applications).
• 🔄 Not save actions — disables the activity cache, but may cause bugs in some applications.

adb shell settings put global development_settings_enabled 1

Another useful trick is Force use of GPU to render the interface. This will speed up the animation, but will increase battery consumption:

1. In Developer options Find Force use GPU.
2. Enable the option and reboot your smartphone.

⚠️ Attention: On devices with a processor Exynos 9820 (for example, Galaxy S10+), forced GPU rendering may cause overheating during prolonged use. Monitor the temperature in Settings → Device maintenance → Battery.

5. Application management: what interferes with speed

Even if you have 30 GB of free memory, incorrectly configured applications they can slow down your smartphone. Main problems:

• 🔄 Autostart —applications start when you turn on the phone and hang in the background.
• 📱 Background activity —messengers, social networks and games constantly exchange data.
• 🔋 Battery optimization —Android limits applications, but sometimes too aggressively.

How to fix:

Disable autorun

1. Go to Settings → Applications.
2. Click on the three dots at the top → Autorun.
3. Disable autorun for unnecessary applications (for example, Facebook, AliExpress, games).

Limit background activity

1. In the same menu Applications select the desired application.
2. Click Battery → Battery optimization → Limit.
3. For critical applications (for example, WhatsApp) select No restrictions.

Fixing applications falling asleep

If applications (for example, music players or navigators) "fall asleep" in the background:

1. Go to Settings → Device maintenance → Battery.
2. Click Background limit → Never disable.
3. Add the desired applications to the list.

Pay special attention social networks i messengers. For example, Facebook i Instagram even in the background can consume up to 500 MB of RAM. An alternative is to use them web versions via a browser (for example, Samsung Internet with the "Add to home screen" option).

6. Alternative launchers and firmware: radical measures

If standard methods do not help, consider replacing the launcher or firmware. This gives the greatest increase in speed, but requires time and sometimes technical skills.

Light launchers

Standard launcher One UI consumes up to 300-400 MB of RAM. Alternatives:

• 🚀 Nova Launcher —fast, with flexible settings (the paid version allows you to disable all animations).
• ⚡ Lawnchair —an open launcher with gesture support and a minimalist design.
• 🛠️ Smart Launcher 6 —automatically sorts applications and has a built-in search.

After installing an alternative launcher:

1. Disable the standard launcher in Settings → Applications → Select default launcher.
2. In the settings of the new launcher, disable all animations and widgets.

Custom firmware

If your Samsung is older than 3 years (for example, Galaxy S9 or Note 10), installing custom firmware can restore its performance. Popular options:

• 📱 LineageOS —pure Android without a shell One UI, supports most models Samsung.
• ⚡ Pixel Experience —firmware with an interface Google Pixel, optimized for weak devices.
• 🔧 Havoc-OS —customizable firmware with many performance settings.

Before installing custom firmware:

1. Check support for your model on the website XDA-Developers or 4PDA.
2. Unlock bootloader (this will reset all data!).
3. Install TWRP Recovery for backup.
4. Make a backup of all data (including the folder EFSwhere IMEI and serial numbers are stored).

⚠️ Attention: Installing custom firmware resets the Knox counter (puts it into state 0x1), which deprives you of the warranty and the ability to use Samsung Pay, Secure Folder and some banking applications (for example, Sberbank Online may block access).

Magisk core and modules

For advanced users: installation alternative kernel (for example, KernelSU or Perseus) or modules Magisk can further speed up the work. Useful modules:

• 🔋 Greenify —forcefully “freezes” unnecessary applications.
• ⚡ Displax —optimizes screen performance and animation.
• 🖥️ AppOps —gives low-level control over application permissions.

Example command for installing a module via Magisk:

adb push module.zip /sdcard/
magisk --install-module /sdcard/module.zip

7. Hardware causes of brakes: when it’s time to call for service

If software methods do not help, the problem may be in hardware. Typical hardware reasons for brakes:

• 🔋 Worn out battery —with a capacity below 70%, the smartphone forcibly limits performance.
• 💾 Damaged flash memory —bad sectors slow down reading/writing data.
• 🌡️ Overheating - dust in the heatsink or dried thermal paste leads to throttling.
• 🛠️ Faulty memory module (rare, but happens on older models).

How to check:

Battery

1. Install the application AccuBattery (shows actual capacity and wear).
2. If capacity below 80%, replace the battery (the original one for Samsung costs ~2-4 thousand rubles).

Flash memory

1. Check the read/write speed using A1 SD Bench.
2. If the speed is below 100 MB/s, there may be memory problems.
3. Make a backup and execute full reset (sometimes this restores the speed).

Overheating

1. Use CPU Monitor to monitor the temperature.
2. If the smartphone heats up above 50°C in simple - clean the charging connector and ventilation holes (or contact the service to replace the thermal paste).

If you suspect a hardware malfunction, but are not sure, perform equipment test:

1. Enter the code in the telephone dialer #0# (screen test and sensors).
2. For deep diagnostics, use *#9900# (SysDump) - save the log and show it to the technician.

⚠️ Attention: On models Galaxy S20 and newer, diagnostic codes may not work due to the security policy. In this case, use the application Phone INFO Samsung.

8. Extreme measures: reset and flashing

If all else fails, all that remains is Full reset or Flashing via Odin. This will return the smartphone to "factory" speed, but will delete all data.

Hard Reset

1. Make a backup of important data (photo, contacts, messages).
2. Go to Settings → General → Reset → Reset data.
3. Select Delete everything and confirm.
4. After the reset do not restore data from the backup immediately —first check the speed of the “clean” device.

Flashing via Odin

If the reset does not help, flash your smartphone official firmware via Odin:

1. Download the latest firmware for your model from the website SamMobile or Frija.
2. Install Odin on PC and drivers Samsung USB.
3. Start the smartphone in mode Download Mode (press Vol Down + Power, then Vol Up).
4. Connect to PC and flash files AP, BL, CP, CSC (instructions are on 4PDA).

After flashing:

• 🔄 Do not update via OTA - wait for stable reviews of the new firmware.
• 🚫 Do not install "optimizers" and antiviruses - they are only slow down.
• 📱 Install only the necessary applications, refusing to autostart.

FAQ: Frequently asked questions about acceleration. Samsung