Why applications on Android do not respond and the phone freezes: 12 reasons and solutions

Did your smartphone suddenly stop responding to touches, applications “do not respond” for several minutes, and the system slows down even when opening the simplest menus? This problem is familiar to millions of users - from owners of budget Android suddenly stopped responding to touches, applications “do not respond” for several minutes, and the system slows down even when opening the simplest menus? This problem is familiar to millions of users - from owners of budget Xiaomi Redmi to flagships Samsung Galaxy S23. In 80% of cases, it is not hardware failures that are to blame, but software failures that you can fix yourself.

In this article we will analyze all possible reasons from overloaded RAM to damaged system files, and also give step-by-step guide on diagnostics and repair. You'll learn how to distinguish a temporary glitch from a serious malfunction, which settings to check first, and when it's time to take your phone to a service center. We will pay special attention hidden Android functions that are not written about in official manuals —for example, how to force a device reboot without a power button or debug operation through ADB.

1. RAM overload

The most common cause of freezes is lack of RAM. Modern applications (especially social networks like TikTok or Instagram) consume up to 1–1.5 GB of RAM each, and background processes (for example, Google Play Services) eat up another 300–500 MB. If you have a smartphone with 3–4 GB of memory, the system begins to freeze when 4–5 apps are launched simultaneously.

How to check:

• 📱 Open Settings → Applications → Running (on some firmware - Accessibility → Activity Monitor).
• 📊 Look at the RAM usage graph. If less than 20% is free, this is a critical level.
• 🔍 Pay attention to applications marked “Cached” - they occupy memory, but are not used.

Solutions:

• 🧹 Close unnecessary applications through the menu recent tasks (swipe up from the bottom panel).
• ⚡ Enable the option Settings → Memory → Clear RAM (on Xiaomi, Realme and other brands).
• 🛠️ Install a lightweight launcher (for example Nova Launcher) - it consumes 30% less memory than the standard one.

⚠️ Attention: Do not use “memory optimizers” from Google Play —most of them themselves cause lags by running background processes.

2. Full storage (ROM)

When the internal memory is full. the beginning (less than 1–2 GB remains), Android begins to slow down when writing temporary files. The system is forced to use swap section (virtual memory), which is 5–10 times slower than regular RAM. This is especially critical for budget smartphones with eMMC-drives (unlike UFS flagships).

How to check:

• 📁 Go to Settings → Storage.
• 📉 If the “System” or “Other” section takes up more than 10 GB, this is a sign of junk files.
• 🔍 Use Files by Google or SD Maid to analyze large files (cache, downloads, duplicates).

Solutions:

• 🗑️ Clear the application cache: Settings → Applications → [Select an application] → Storage → Clear cache.
• 📤 Transfer photos and videos to the cloud (Google Photos, Yandex Disk) or to a memory card.
• 🔄 Reset settings to factory settings (if less than 500 MB free).

Delete unnecessary applications

Transfer photos/videos to the cloud

Save contacts to Google Account

Write down important passwords

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3. Failures in the firmware (MIUI, One UI, ColorOS, etc.)

Customized shells from manufacturers (MIUI y Xiaomi, One UI y Samsung, ColorOS y Oppo/Realme) often contain bugs, especially after updates. For example, in MIUI 14 there was a massive bug with the interface freezing due to a conflict with Google Play Services. And One UI 5.1 some users complained of “freezing” when opening the camera.

Signs of problems with the firmware:

• 🔄 The phone hangs after the update.
• 📱 The interface jerks when scrolling.
• 🔴 Applications crash with the error “android.process.media stopped."

Solutions:

• 🔄 Restart your phone in safe mode (press and hold the power button → “Safe Mode”). If the lags are gone, third-party software is to blame.
• 📥 Rollback to the previous firmware version (instructions for Samsung, Xiaomi etc., see below).
• 🛠️ Reset settings via Recovery Mode (does not delete files, but resets settings).

⚠️ Attention: Rolling back the firmware may lead to the bootloader being locked on some models (for example, Samsung Exynos). Before the procedure, check compatibility on the 4PDA or XDA Developers forums.

4. Application conflicts and viruses

Some apps (especially pirated ones or from unverified sources) can block system processescausing freezes. For example, applications for autoclick, VPN with aggressive advertising or modded games often cause crashes. Also, viruses (for example, Trojan.AndroidOS.Boogr) disguise themselves as system services and load the processor.

How detect:

• 🔍 Install Malwarebytes or Dr.Web Light and scan the system.
• 📊 Check CPU consumption in Settings → Battery → Battery usage. If some application loads the processor by 50%+, remove it.
• 🚨 Pay attention to pop-ups asking you to “optimize your phone” - this is a sign of adware.

Solutions:

• 🚫 Remove suspicious applications (especially those that ask for rights AccessibilityService or Device Admin).
• 🔒 Disable installation from unknown sources: Settings → Security → Unknown sources.
• 🛡️ Reset permissions for all applications: Settings → Applications → Three dots → Reset permissions.

5. Problems with the battery and overheating

A worn-out battery (capacity below 70%) or CPU overheating can cause throttling a forced decrease in performance. For example, at Qualcomm Snapdragon at temperatures above 60°C, the core frequency drops by 40–50%, which leads to lags. Also, a faulty battery can cause voltage surges, due to which the phone “freezes” for 5–10 seconds.

How to diagnose:

• 🔋 Check battery wear via AccuBattery or ##4636## → “Battery Information”.
• 🌡️ Install CPU Monitor or AIDA64 to track the temperature.
• 🔌 Connect the phone to the charger - if the lag increases, the problem is in the power controller.

Solutions:

• 🔄 Replace the battery (cost for popular models is 1,500–3,000 ₽).
• ❄️ Cool the phone (remove the case, put it in the shade, use a cooling pad).
• ⚡ Disable fast charging if the phone heats up when connected to the network.

6. Hardware faults

If none of the software methods helped, the problem may be in hardware:

• 💾 Damaged flash memory (bad blocks) - leads to read/write errors and freezes when opening files.
• 🧠 Faulty processor —rare, but occurs after falls or overheating (symptom: the phone hangs when starting heavy games).
• 📶 Problems with the module communications —if lags occur when making calls or using the mobile data.

How to check:

• 🔧 Run a memory test via ##36446337## (on some Samsung) or Phone Doctor Plus.
• 🛠️ Check the phone for drops/impacts - even microcracks on the board can cause failures.
• 🔌 Connect to another charger - if the lags disappear, the problem is in the power controller.

⚠️ Attention: If the phone hangs on the logo when turned on or reboots cyclically, this is a sign damage to the bootloader or memory chip blade. Self-repair is not possible; a soldering station is required.

7. Features of specific brands

Each manufacturer has “proprietary” bugs that cause freezes:

8. When to contact the service center

If you have tried all the methods, but the phone still freezes, it’s time to take it in for repairs. Pay attention to these symptoms:

• 🔄 The phone reboots cyclically (bootloop).
• 💥 artifacts (stripes, flickering, distortion) appear on the screen.
• 🔌 Does not charge or turns off when connected to the network.
• 📵 Not detected SIM card or Wi-Fi module.

Repair cost:

• 🔋 Battery replacement: 1,500–3,000 ₽.
• 💾 Flash memory resoldering: 3,000–8,000 ₽.
• 🧠 Motherboard repair: from 5,000 ₽ (depending on the model).

Where to repair:

• 🏠 Official service center — 6–12 month warranty, but more expensive.
• 🛠️ Unofficial workshops —cheaper, but the risk of poor-quality repairs.
• 📦 On your own —only if you have experience (for example, replacing a battery on Xiaomi with a removable cover).

⚠️ Attention: Before submitting your phone for repair required make a backup copy of your data via ADB backup or Google Account. Some workshops format the memory without warning.

FAQ: Frequently asked questions

adb pull /sdcard/ C:\Backup\